Gen5 Glock 19 10 round magazines

[eric0311]

I recently purchased a few Gen5 G19 mags for out of state travel to states with hi-cap mag laws. I haven’t seen much traffic regarding the Gen5 10 rounders, so I thought I’d share my testing results, given the spotty history of OEM Glock 10 round G19 mags.

The magazines sport the Gen5 base plate, with an orange colored 2183 follower. Witness holes indicate the rounds accurately, in the magazine tube. I was able easily load 10 rounds into each magazine without the need for a loading tool. The fully loaded magazines were easy to seat into my pistol with the slide forward. Given the reported issues some have had in the past, with Gen 3/4 G19 10 round mags, specifically with flat-nose profile ammo, I began my testing with (4) loads that I carry/shoot regularly. I utilized a Gen5 Glock 19 MOS, with EPS Carry RDS and TLR-7A.

100 rounds -Winchester Ranger-T 147gr 9mm
100 rounds -Gold Dot 124gr +P 9mm
40 rounds -Underwood 147gr +P hardcast coated 9mm
200 rounds -Winchester 115gr FMJ 9mm

Zero malfunctions/and or failures to feed with any of the rounds tested. I will continue to use the magazines in future testing and training, but so far so good.

[Navin Johnson]

Will be following as I am in a (obviously much safer now) 10 round state.

[ECVMatt]

That is good to hear!

I am hopeful we are going to get some good news out of CA soon that will be a step towards making those unnecessary. Of course it will be a long road, but hopefully will end in our favor.

Thanks for pointing these out, I did not know they were available.

[High Cross]

I recently purchased a few Gen5 G19 mags for out of state travel to states with hi-cap mag laws. I haven’t seen much traffic regarding the Gen5 10 rounders, so I thought I’d share my testing results, given the spotty history of OEM Glock 10 round G19 mags.

The magazines sport the Gen5 base plate, with an orange colored 2183 follower. Witness holes indicate the rounds accurately, in the magazine tube. I was able easily load 10 rounds into each magazine without the need for a loading tool. The fully loaded magazines were easy to seat into my pistol with the slide forward. Given the reported issues some have had in the past, with Gen 3/4 G19 10 round mags, specifically with flat-nose profile ammo, I began my testing with (4) loads that I carry/shoot regularly. I utilized a Gen5 Glock 19 MOS, with EPS Carry RDS and TLR-7A.

100 rounds -Winchester Ranger-T 147gr 9mm
100 rounds -Gold Dot 124gr +P 9mm
40 rounds -Underwood 147gr +P hardcast coated 9mm
200 rounds -Winchester 115gr FMJ 9mm

Zero malfunctions/and or failures to feed with any of the rounds tested. I will continue to use the magazines in future testing and training, but so far so good.

As I am in New Jersey and use a Glock 19, thank you for sharing this. I specifically chose that platform when we had a 15 round limit and they did not make 15 rounders at that time for a Glock 17

[eric0311]

That is good to hear!

I am hopeful we are going to get some good news out of CA soon that will be a step towards making those unnecessary. Of course it will be a long road, but hopefully will end in our favor.

Thanks for pointing these out, I did not know they were available.

Absolutely… I’m looking forward to leaving these things in a gear bin, permanently, once these laws get struck down (fingers crossed!).

[psalms144.1]

Eric - thanks for the info - will be watching with interest as I'm always "parking" my G19 while traveling outside of free states.

[okie john]

Looking forward to learning more about this. Trying to see if the value is there to switch to a G48 or similar.


Okie John

[eric0311]

I’m glad you all are tracking this… I wanted to see for myself if these 10 round mags were really maligned as some have professed on several websites… either way, I’m gonna find out!

Next up ( when they ship )

Hornady 135gr +p Critical Duty 9mm
Gold Dot 147gr 9mm
Federal HST 124 P9HST1S

Let’s see what these mags can do!

[swampyank33]

Thanks for doing this. Curious to see how things progress

Sent from my SM-A515U using Tapatalk

[JonInWA]

Eric, this is great, and nicely dovetails in my testing of current Glock G19 10 round magazines in my Gen 3 G19, as discussed in this concurrently running thread: https://pistol-forum.com/showthread.php?56218-Glock-Gen-3-G19-With-Component-and-or-Alternative-Upgrades

My question is regarding your orange followers, can you please check the markings on them? My current Glock parts list specifies that the only Orange followers for a Gen 5 are part number 52332, marked "7" or part number 1265, marked "2" but that the 2183 part number follower for G19 10 round magazines (marked "2183-2") (good up through Gen4) and black.

I'm also querying a source in Glock. The great news is that whatever the follower in your Gen5/Gen5 10 round magazines, they're working.

Check the Armorers Parts List on the Glock downloadable materials: https://us.glock.com/en/Downloadable-Materials

Best, Jon

[eric0311]

Alright folks, I apologize about the delay in testing results... I was waiting on the latest batch of test ammo to ship. I tested the following loads through my Gen5 19 MOS, using the same (2) test sample Gen 5 G19 10 round magazines (w/ 2183-2 Orange followers):

50 rounds Speer 147gr G2
50 rounds Hornady Critical Duty 135gr Flex Lock
50 rounds Federal 124gr HST
200 rounds Winchester 115gr FMJ White Box
*the HST by far, had the largest diameter hollow-point of any rounds fired to date*

ZERO malfunctions/or failure to feed stoppages with any rounds today.

Stay tuned for more testing... so far so good!

[eric0311]

Eric, this is great, and nicely dovetails in my testing of current Glock G19 10 round magazines in my Gen 3 G19, as discussed in this concurrently running thread: https://pistol-forum.com/showthread.php?56218-Glock-Gen-3-G19-With-Component-and-or-Alternative-Upgrades

My question is regarding your orange followers, can you please check the markings on them? My current Glock parts list specifies that the only Orange followers for a Gen 5 are part number 52332, marked "7" or part number 1265, marked "2" but that the 2183 part number follower for G19 10 round magazines (marked "2183-2") (good up through Gen4) and black.

I'm also querying a source in Glock. The great news is that whatever the follower in your Gen5/Gen5 10 round magazines, they're working.

Check the Armorers Parts List on the Glock downloadable materials: https://us.glock.com/en/Downloadable-Materials

Best, Jon


The Gen5 G19 10 round magazines that I have been testing both have 2183-2 Orange followers.

[Rex G]

This is good news. Thanks for buying and testing these mags. In my case, not owning a G19, my favored “pinkie rest,” for a G26, when ultra-concealment is not vital, is a G19 mag. I do not live in a capacity-limited state, but do visit or pass through such places.

[eric0311]

This is good news. Thanks for buying and testing these mags. In my case, not owning a G19, my favored “pinkie rest,” for a G26, when ultra-concealment is not vital, is a G19 mag. I do not live in a capacity-limited state, but do visit or pass through such places.

No worries! I’m glad these tests can dispel some “inter webs” lore regarding the OEM Gen5 10 rounders. I’m going to keep running as many JHPs, from different manufacturers, through these things as I can.

As it stands, I wouldn’t hesitate to use them for carry.

[Bucky]

It is about time that Glock redesigned their 10 round magazines. I was told by someone in the know the Fed was particularly hard on Glock during the 1994 AWB, and rejected their initial design.

[Bucky]

Absolutely… I’m looking forward to leaving these things in a gear bin, permanently, once these laws get struck down (fingers crossed!).

Unfortunately, I think we will all (in the USA) see a permanent federal ban within the next 15 years.

[G19Fan]

I have feedback to on this.

When visiting commie states I use gen 5 G19 10 round mags too.

No issues at all (did have issues with gen 3 and gen 4)

100 to 150 rounds of each

Ranger T 147
HDT 124
HST 147
Hydrasok 124
Gold dot 124
Remington Golden Sabre 124
Gold dot 115
Sig 115
Sig 124
Sig 147
Corbon 124
Random Remington 115 jhp
Some sort of Norma JHP

[eric0311]

I have feedback to on this.

When visiting commie states I use gen 5 G19 10 round mags too.

No issues at all (did have issues with gen 3 and gen 4)

100 to 150 rounds of each

Ranger T 147
HDT 124
HST 147
Hydrasok 124
Gold dot 124
Remington Golden Sabre 124
Gold dot 115
Sig 115
Sig 124
Sig 147
Corbon 124
Random Remington 115 jhp
Some sort of Norma JHP

That’s awesome! Thank you for posting to this study… I don’t know for certain but I think Glock may have changed something with these Gen5 G19 10 rounders…. Something for the better!

[Wooosh]

Glad to hear that the Gen5 mags are reliable. Are they the orange 9mm6 followers? from what I've heard, the 10-round magazines with the 2183 followers give their owners nothing but trouble.

[HTM]

Glad to hear that the Gen5 mags are reliable. Are they the orange 9mm6 followers? from what I've heard, the 10-round magazines with the 2183 followers give their owners nothing but trouble.

The Gen5 orange follower is the same as the Gen3-Gen4 follower except for the color.

[eric0311]

Glad to hear that the Gen5 mags are reliable. Are they the orange 9mm6 followers? from what I've heard, the 10-round magazines with the 2183 followers give their owners nothing but trouble.

The magazines I’ve been testing both have the orange 2183-2 follower.

[exuberant]

I don't know when Glock made these changes, but they did update their 10 round mags, at least the ones for the 19. The new magazines are marked 2274-02 on the rear of the body. The new magazine bodies are longer, closer to the same length of the standard 15 round magazine. These new mags also fit 19s with a magwell, unlike the older ones.

I haven't had any trouble with them, but if you do, you can drop in a 9mm7 follower and they work without modification. You used to have to file either the follower or mag body for them to fit.

[eric0311]

I don't know when Glock made these changes, but they did update their 10 round mags, at least the ones for the 19. The new magazines are marked 2274-02 on the rear of the body. The new magazine bodies are longer, closer to the same length of the standard 15 round magazine. These new mags also fit 19s with a magwell, unlike the older ones.

I haven't had any trouble with them, but if you do, you can drop in a 9mm7 follower and they work without modification. You used to have to file either the follower or mag body for them to fit.

That’s awesome info- I have a few 15 round Gen5 mags with the 9mm7 follower… I’ll try them out!

I wonder if the new 10rd Gen5 magazine, coupled with the 19.5 (and its more robust recoil spring/assembly) has something to do with the improved feeding and reliability…

[JonInWA]

Shot a complete match with the current production Gen5 10 round magazines; 3 stages with my Gen 3 G17 with the Gen 5 magazines with orange 2183 2 followers, and 3 stages with my Gen 3 G19 with Gen5 G19 10 round magazines also with the 2183 2 orange followers, and with Federal Premium Law Enforcement 147 gr HST cartridges.

Absolutely zero issues. Loading, cycling, firing, extraction, ejection, reloads were accomplished with zero hiccups.

While not a high round count match, in my experience with earlier Glock 10 round magazines, problems will crop up early and repeatedly.

At this point, although I'll continue testing, I'm comfortable in personally carrying my G19 and G17 with these Gen5 magazines. The G19 magazines have a spine code of 2274-02, the G17 magazines have no code numbers on the magazine spine, but an contemporary current production Gen 3/4 magazine (which I also tested a magazine worth in during the match, with zero problems) has a spine code of 2267-01, and has the previous black continuously angled chute follower marked "9mm3"

I think the safe default from this point for 10 round G17 and particularly for G19 10 round magazines will be to go the Gen5 route. It may be moot; a source in Glock thinks that all current production G17 and G19 10 round magazines are coming with the orange 2183 2 follower.

I've seen speculation that the tubes of the Gen5 magazines may be different from previous production, but other than the magazine catch insert notches I'm not seeing anything particularly different; the length, liners and feed lips all appear to be the same.

Best, Jon

[Salamander]

Another data point, with a little additional information.

Like many others I've found older versions of Glock 9mm 10-round magazines to be less than reliable with JHP. As a result I've carried only the G26 in California. After finding this thread on a search, I tested two of the Gen 5 orange follower 10-round magazines for a G17. My motivation is the recent availability of the Gen 3 MOS spare slides, which has me revisiting Glocks.

The test pistol is a blue label G34 gen 3, all stock except for grip tape. This one was acquired about a year ago and intended for range use, but not shot much so far; only 100 rounds total before today. It wasn't the greatest range day, a storm is just coming in and it was about 50F and steady light rain but it looks wetter tomorrow so decided to put the time in today. The range is about 12 miles in from the coast and at an elevation of about 950 feet, just enough to drop some extra moisture from the clouds.

The magazines arrived yesterday and were loaded full for 24 hours. Ammo was mostly standard pressure 9mm 147gr HST, and some 124gr +p Gold Dots, about 100 rounds total. I had just a few 135gr Critical Duty, about 7 rounds, so ran those through also.

All were 100 percent reliable, no stoppages of any kind. That's promising enough that I'm going to go ahead and order a G17 MOS slide, mount my spare EPS on it, and then do some additional testing in that configuration.

Some California specific info: This G34 came with three 10-round magazines which appear to be externally almost identical to the two I just ordered, except that they have black followers instead of orange. Both new and old are labeled 2267-01 on the back of the magazine body, and the followers are both 2183-2. The only visible difference is the baseplate, the one year old California black follower mags have the old style flat baseplates, while the newer orange follower mags have the distinctive Gen 5 baseplates which project a little farther forward and are more rounded on the front edge underside as opposed to the older squared off baseplates. I have not yet disassembled to look for internal differences, if any. I ran mostly reloads through the old magazines today, mostly 135gr truncated cone Blue Bullets and a few reloads with 115gr XTP JHP, no issues. I didn't waste any duty ammo on them because they will be my practice mags, easy to distinguish by follower color. For some reason I'm seeing only the black follower versions available retail here and had to order online from a national/out of state supplier to get the orange follower version. No idea why that is.

[SwampDweller]

I just ordered a factory two-tone FDE G19 Gen 5 Lipsey's Exclusive (factory FDE frame, standard black slide). It comes with 10 round Gen 5 mags since that was the only one available. I planned on just throwing away the 10 round mags due to the previous long-standing poor track record of the 10 round G19 mags, as I have plenty of 15 round mags. Maybe I should reconsider?

Part of why I bought a G26 was to have a reliable 10 round 9mm Glock for travel to ban states using the standard magazines it was designed for. Down the road I had always planned to get a G19 to chop the grip to G26 length to use it's mags, but having a G19-length grip with reliable 10 round G19 mags would be quite nice.

Unfortunately, I hate to agree with Bucky, but I see a 10 round limit becoming the law of the land on a federal level within my lifetime as well. Hopefully that will never happen, but I like to hedge my bets, just in case.

[steve]

I just ordered a factory two-tone FDE G19 Gen 5 Lipsey's Exclusive (factory FDE frame, standard black slide). It comes with 10 round Gen 5 mags since that was the only one available. I planned on just throwing away the 10 round mags due to the previous long-standing poor track record of the 10 round G19 mags, as I have plenty of 15 round mags. Maybe I should reconsider?

Part of why I bought a G26 was to have a reliable 10 round 9mm Glock for travel to ban states using the standard magazines it was designed for. Down the road I had always planned to get a G19 to chop the grip to G26 length to use it's mags, but having a G19-length grip with reliable 10 round G19 mags would be quite nice.

Unfortunately, I hate to agree with Bucky, but I see a 10 round limit becoming the law of the land on a federal level within my lifetime as well. Hopefully that will never happen, but I like to hedge my bets, just in case.

Keep them. 10 round mags are great range and training mags. If you ever want to hit up a GSSF match in a ban state they are great to have.

[SwampDweller]

Keep them. 10 round mags are great range and training mags. If you ever want to hit up a GSSF match in a ban state they are great to have.

I don’t really believe in “training only” mags. I don’t want any decreased reliability caused by the mags to introduce doubt in the gun’s reliability and I prefer minimizing the magazine as a variable in any potential stoppages, especially when a new gun is in the reliability vetting process (first 1k rounds minimum). I also don’t want to risk potentially less reliable training mags getting mixed in or mistakenly grabbed in a rush with “serious use” mags.

That said, maybe I’ll stash these and try them out later in a G19 that is dedicated to training only, like a PD trade in, to vet these mags. I don’t like to experiment with variables that may affect reliability in pistols I might carry. Is that OCD and ridiculous? Oh yes. But it helps me sleep at night.

[eric0311]

I don’t really believe in “training only” mags. I don’t want any decreased reliability caused by the mags to introduce doubt in the gun’s reliability and I prefer minimizing the magazine as a variable in any potential stoppages, especially when a new gun is in the reliability vetting process (first 1k rounds minimum). I also don’t want to risk potentially less reliable training mags getting mixed in or mistakenly grabbed in a rush with “serious use” mags.

That said, maybe I’ll stash these and try them out later in a G19 that is dedicated to training only, like a PD trade in, to vet these mags. I don’t like to experiment with variables that may affect reliability in pistols I might carry. Is that OCD and ridiculous? Oh yes. But it helps me sleep at night.

It’s a good procedure to utilize; having a stash of training magazines that you use and abuse, apart from your duty/carry magazines. They should be properly marked as a training magazine, as to alert the shooter of their training-only status. This is why most, if not all professional shooters utilize training mags is that the constant loading/unloading fatigues the springs…the constant dropping and impact onto hard surfaces while reloading can cause damage… damage that you probably don’t want to expose your carry-only magazines.

[pangloss]

I put orange and blue factory baseplates on my G17 and G19 range mags respectively. Makes it super easy to identify at a glance. If I were starting over, I'd probably buy tan G17 mags for dedicated range use for all my G17s and G19s. Having options is nice.

Getting back to the ten round mags, it'd be better to give them away in a karma thread than to trash them.

[Clusterfrack]

Send them to Oregon. We're going to need lots and lots of 10-round mags pretty soon.

[SwampDweller]

Good point on giving them away. I will likely list them here to send to someone who may need them.

Also good points on the reason for training mags. Usually when I’ve thought of “training mags” I think of cheaper less reliable mags, but having some mags set aside for training only due to wear and tear is a good idea.

[L-2]

Thanks for this 10-rounder G19 mag thread.
It's a good idea, especially with 10-round G19 mags to as-thoroughly-as-possible, vett any magazines for carry use.
I can only wonder if all 10-round Glock mags will work in the OP's G19gen5, or any other G19gen5; or if Glock was able to engineer some small change into its latest G19gen5.

I'm doubting, but really don't know, if somehow Glock made a change to its 10-round G19gen5 mags as I think there's merely a color change to the 10-round 9mm follower and the mag's baseplate has that little lip. I'm thinking even the older 10-round G19 mags might work in the OP's G19gen5. Maybe due to tolerance stacking, the subject G19gen5's slide, barrel, & frame could have a slight difference in feed angles vs someone's G19 gens 2-4 which wouldn't reliably feed using their 10-round G19 mags.

I think I've got a 10-round older G19 mag (probably a Gen4 version with black-colored follower and older type baseplate) laying around but not going to put much time and money into verifying its reliability with my carry ammo. I don't travel to other states much if ever (only NV and CA and retired/LE exempt in CA).

Off-Topic: Plus, probably my favorite go-to carry Glocks are either of two G26 guns, anyway (normally stock 10-rounders). I'll also go to my sub-10-round revolvers (from the revolver forum) should I need ever need to travel out of state at a moment's notice, even though I've got 50-state LEOSA permitted carry.

To think folks were filing mag bodies and followers; changing followers; who knows what else in attempts to get their 10-round G19 mags to work. It takes so much trial & error to only maybe get reliability. As everybody here knows, that abitrary 10-round mag limit states/locales enact can be so frustrating.

[Salamander]

Thanks for this 10-rounder G19 mag thread.
It's a good idea, especially with 10-round G19 mags to as-thoroughly-as-possible, vett any magazines for carry use.
I can only wonder if all 10-round Glock mags will work in the OP's G19gen5, or any other G19gen5; or if Glock was able to engineer some small change into its latest G19gen5.

I'm doubting, but really don't know, if somehow Glock made a change to its 10-round G19gen5 mags as I think there's merely a color change to the 10-round 9mm follower and the mag's baseplate has that little lip. I'm thinking even the older 10-round G19 mags might work in the OP's G19gen5. Maybe due to tolerance stacking, the subject G19gen5's slide, barrel, & frame could have a slight difference in feed angles vs someone's G19 gens 2-4 which wouldn't reliably feed using their 10-round G19 mags.

I think I've got a 10-round older G19 mag (probably a Gen4 version with black-colored follower and older type baseplate) laying around but not going to put much time and money into verifying its reliability with my carry ammo. I don't travel to other states much if ever (only NV and CA and retired/LE exempt in CA).

Off-Topic: Plus, probably my favorite go-to carry Glocks are either of two G26 guns, anyway (normally stock 10-rounders). I'll also go to my sub-10-round revolvers (from the revolver forum) should I need ever need to travel out of state at a moment's notice, even though I've got 50-state LEOSA permitted carry.

To think folks were filing mag bodies and followers; changing followers; who knows what else in attempts to get their 10-round G19 mags to work. It takes so much trial & error to only maybe get reliability. As everybody here knows, that abitrary 10-round mag limit states/locales enact can be so frustrating.

I was completely out of Glock, except for G26, for years because of 10-round mag unreliability. The last time I tested was several years ago and at that time was getting stoppages on almost every magazine with JHP. That happened with multiple G19s and one G17, so it wasn't an occasional thing. They ran fine with FMJ.

What's amazing about it is that gen 3 Glocks were and still are the most common pistols at the range here. While doing RSO days I've watched so many individuals practice with FMJ range ammo with the same Glocks they use for carry. Every now and then I'd ask someone if they had ever tested their carry pistol with their carry ammo, and responses ranged from "no" to blank looks to "that's too expensive." And if they're bothering to go to the range these folks probably aren't even on the left half of the curve. Given the frequency of stoppages, I've always thought it was litigation waiting to happen and more than a little short sighted of Glock to take so long to fix it.

[GJM]

Great thread! When I purchased my Glock 19 with the new Aimpoint, I mistakenly bought one that came with 10 round magazines. I put them aside thinking here is a waste of three magazines, and now we have this thread. I have taken one of them and put it in my truck to use with any JHP testing that I do.

[eric0311]

Thanks for this 10-rounder G19 mag thread.
It's a good idea, especially with 10-round G19 mags to as-thoroughly-as-possible, vett any magazines for carry use.
I can only wonder if all 10-round Glock mags will work in the OP's G19gen5, or any other G19gen5; or if Glock was able to engineer some small change into its latest G19gen5.

I'm doubting, but really don't know, if somehow Glock made a change to its 10-round G19gen5 mags as I think there's merely a color change to the 10-round 9mm follower and the mag's baseplate has that little lip. I'm thinking even the older 10-round G19 mags might work in the OP's G19gen5. Maybe due to tolerance stacking, the subject G19gen5's slide, barrel, & frame could have a slight difference in feed angles vs someone's G19 gens 2-4 which wouldn't reliably feed using their 10-round G19 mags.

I think I've got a 10-round older G19 mag (probably a Gen4 version with black-colored follower and older type baseplate) laying around but not going to put much time and money into verifying its reliability with my carry ammo. I don't travel to other states much if ever (only NV and CA and retired/LE exempt in CA).

Off-Topic: Plus, probably my favorite go-to carry Glocks are either of two G26 guns, anyway (normally stock 10-rounders). I'll also go to my sub-10-round revolvers (from the revolver forum) should I need ever need to travel out of state at a moment's notice, even though I've got 50-state LEOSA permitted carry.

To think folks were filing mag bodies and followers; changing followers; who knows what else in attempts to get their 10-round G19 mags to work. It takes so much trial & error to only maybe get reliability. As everybody here knows, that abitrary 10-round mag limit states/locales enact can be so frustrating.

Great point on the Gen5 tolerances… I have a Gen3 19… I’m going to start testing the Gen5 10 round mags in it, with the usual suspect JHPs.

[L-2]

I recall an old thread/post from member DocGKR from years ago who talked about the unreliability of G19 10-rounders and recommending a G26 with its 10-rounder instead of a G19 with a 10-round mag.

For me, I recall I had failure to chamber the first JHP round of a 10-rounder with my old G19gen3 or gen4 from slide lock. I didn't want to have the top/1st being a FMJ round with the remaining 9 rounds being JHP ammo, although that could have been a work-around if I insisted on using G19 10-rounders. As I mentioned earlier, I am/was exempt anyway in California, being LEO/retired LEO, although I wouldn't try it in any other 10-round-limited states as LEOSA doesn't generally apply to mag cap limits I hear.

Maybe GJM will later add to this thread as he seems to have relatively unlimited time & ammo to shoot compared to many/most folks. Thanks GJM:) (I need to shoot more as I used to do.)

[GJM]

I recall an old thread/post from member DocGKR from years ago who talked about the unreliability of G19 10-rounders and recommending a G26 with its 10-rounder instead of a G19 with a 10-round mag.

For me, I recall I had failure to chamber the first JHP round of a 10-rounder with my old G19gen3 or gen4 from slide lock. I didn't want to have the top/1st being a FMJ round with the remaining 9 rounds being JHP ammo, although that could have been a work-around if I insisted on using G19 10-rounders. As I mentioned earlier, I am/was exempt anyway in California, being LEO/retired LEO, although I wouldn't try it in any other 10-round-limited states as LEOSA doesn't generally apply to mag cap limits I hear.

Maybe GJM will later add to this thread as he seems to have relatively unlimited time & ammo to shoot compared to many/most folks. Thanks GJM:) (I need to shoot more as I used to do.)

I resemble that comment. I have a ten rounder in the truck, to test in the 19/26 with JHP when the opportunity arises. Wish I knew about this when I started the little gun thread.

[Beat Trash]

During the AWB I got interested in the Glock 19 as an off-duty gun. (I was stuck with a 3rd gen S&W as an issued gun) I found with a stock 10rd magazine loaded with one round that I could induce a malfunction almost every time if I tried to load the gun from slide lock. Even when using FMJ ammunition. The nose of the round would dip down and catch on the bottom edge of the feed ramp. The 10rd followers had a weird cutout on them. If I replaced that follower with a #3 marked follower from a 15rd magazine, the problem went away.

Those magazines have long since disappeared.

Like others have stated, I like knowing that if need be, the new production 10rd magazines are good to go.

As a side note: I bought some LE/Mil marked Glock 19 15rd magazines in 1999. I carried those for a long time, but they are now regulated as training magazines. About 6 of these are kept loaded at any given time with training ammunition. Mainly in case I get an urge to go practice and don’t want to have to stop and load mags. I’ve been doing this for at least the last 10 years with the AWB era 15rd magazines. They’re still going strong with the original springs.

I also have 3 x 17rd S&W M&P magazines that I marked and used as training magazines prior to my retirement. These also were used for about 10 years through 2 issued M&P’s. While it was nice not to have to unload and reload duty ammo out of your issued 3 magazines when at department training sessions, the real benefit was that since I didn’t give a sh*t about the training magazines, they got dropped on concrete and gravel a lot while conducting emergency reloads over the years. The finish on the bodies of these mags looks rough. But the magazines are still going strong.

I’ve become a believer in the value of having dedicated training magazines that are exactly like those you carry.

Training or carry, an unreliable magazine gets kissed by a hammer before getting tossed.

[Rex G]

This discussion reminds me of the gun that DocGKR built, or, had built, a G19 with the grip sculpted to take G26 mags, but leaving some amount of front strap and back strap in place, to make the weapon more grip-able than a G26. I filed that idea away, into the back of my mind, for a Travelin’ Pistol project. If I remember correctly, my subsequent discovery of how so very well a Short Frame G30 fits my left hand probably caused DocGKR’s concept to fade from my memory. Even so, a carefully cut-down G19 remains a worthy project, that I should resurrect, if for no other reason than that no G26 has a rail that can accept a Surefire X300-series WML, and, when not traveling to restrictive states, so often have G17 mags on or about my person.

Sorry for the thread drift.

[Salamander]

Great thread! When I purchased my Glock 19 with the new Aimpoint, I mistakenly bought one that came with 10 round magazines. I put them aside thinking here is a waste of three magazines, and now we have this thread. I have taken one of them and put it in my truck to use with any JHP testing that I do.

As always, your testing is greatly appreciated :)

[GJM]

As always, your testing is greatly appreciated :)

Maybe not!

[GJM]

I put one of the latest Glock ten round mags in the truck, to test as the opportunity arose. Today, at the end of my practice, I wanted to shoot ten rounds of standard pressure Gold Dot 124 to check point of impact compared to the 124+P HST my EDC is zeroed with.

Here is the magazine.

131501

First five shots, freestyle at 25 yards.

131502

I went back to shoot another five at 25. This was cartridge nine, and the slide locked back with a cartridge left in the magazine. I am not feeling the love yet to depend on these with JHP.

131503

[eric0311]

I put one of the latest Glock ten round mags in the truck, to test as the opportunity arose. Today, at the end of my practice, I wanted to shoot ten rounds of standard pressure Gold Dot 124 to check point of impact compared to the 124+P HST my EDC is zeroed with.

Here is the magazine.

131501

First five shots, freestyle at 25 yards.

131502

I went back to shoot another five at 25. This was cartridge nine, and the slide locked back with a cartridge left in the magazine. I am not feeling the love yet to depend on these with JHP.

131503

Weird malfunction… I had issues with the Gen5 slide stops, until I switched out for the KAGwerks slide stop…

I just put 150 rounds of 147 grain Ranger T, 135 grain Critical Duty and 124 grain Gold Dot through 3 of my Gen5 G19 10 round magazines today… zero malfunctions or issues to report.

[GJM]

Weird malfunction… I had issues with the Gen5 slide stops, until I switched out for the KAGwerks slide stop…

I just put 150 rounds of 147 grain Ranger T, 135 grain Critical Duty and 124 grain Gold Dot through 3 of my Gen5 G19 10 round magazines today… zero malfunctions or issues to report.

Just to clarify, you had issues with the OEM slide stop generally, or with the OEM slide stop and OEM 10 round Glock 19 magazines?

[AMC]

I put one of the latest Glock ten round mags in the truck, to test as the opportunity arose. Today, at the end of my practice, I wanted to shoot ten rounds of standard pressure Gold Dot 124 to check point of impact compared to the 124+P HST my EDC is zeroed with.

Here is the magazine.

131501

First five shots, freestyle at 25 yards.

131502

I went back to shoot another five at 25. This was cartridge nine, and the slide locked back with a cartridge left in the magazine. I am not feeling the love yet to depend on these with JHP.

131503

GJM, were you able to see the ledge on the follower engaging the internal side of the slide stop? And did the ledge seem 'high' to you on inspection?

[GJM]

GJM, were you able to see the ledge on the follower engaging the internal side of the slide stop? And did the ledge seem 'high' to you on inspection?

Unfortunately, I did not look at that. I stopped, took a picture, and finished shooting my group.

What is curious about this, is I believe this is the first stoppage I have ever experienced with this pistol. I really appreciate the work that Eric is doing. It is time consuming and expensive. I often learn more, though, when something goes wrong then right. If an issue is very intermittent, it can be very frustrating sorting it out.

My recollection is that it was quite well established that the older 10 round magazines were not reliable with JHP. Does anyone know the differences between them and these new 10 round magazines?

[eric0311]

GJM, thank you for your post; regarding these 10 round mags… I’d be very curious as to the previous reply about the follower tab contacting the slide stop tab… I’ve been trying to mimic your “stoppage” with live and dummy rounds… with the 10 round G5 19-10rnd mags… I cannot replicate that early-slide stop issue… I sincerely believe … based now on close examination of the post, you have really big hands… more so your support (left hand) chicken -wing has a metric ton of meat … I really think that you are hitting the overly-engineered Gen5 slide stop (it’s a lot bigger than the gen3/4) with the thick portion of your support thumb…. I only say this because I grip extremely high on my support hand with a Glock and the only remedy was shaving down Gen3 slide stops or buying the KAGwerks slide stop (now my Gen3 and Gen5 19 have it) which ended my pre-mature slide stop issues… YMMV

[Noah]

GJM, thank you for your post; regarding these 10 round mags… I’d be very curious as to the previous reply about the follower tab contacting the slide stop tab… I’ve been trying to mimic your “stoppage” with live and dummy rounds… with the 10 round G5 19-10rnd mags… I cannot replicate that early-slide stop issue… I sincerely believe … based now on close examination of the post, you have really big hands… more so your support (left hand) chicken -wing has a metric ton of meat … I really think that you are hitting the overly-engineered Gen5 slide stop (it’s a lot bigger than the gen3/4) with the thick portion of your support thumb…. I only say this because I grip extremely high on my support hand with a Glock and the only remedy was shaving down Gen3 slide stops or buying the KAGwerks slide stop (now my Gen3 and Gen5 19 have it) which ended my pre-mature slide stop issues… YMMV

I thought the same thing especially since he had the same malf with a G26 with Gold Dot recently, but the counterpoint is he’s shot thousands if not multiple tens of thousands of rounds through Gen 5 Glocks in the last 8 years WITHOUT this occurring.

[GJM]

GJM, thank you for your post; regarding these 10 round mags… I’d be very curious as to the previous reply about the follower tab contacting the slide stop tab… I’ve been trying to mimic your “stoppage” with live and dummy rounds… with the 10 round G5 19-10rnd mags… I cannot replicate that early-slide stop issue… I sincerely believe … based now on close examination of the post, you have really big hands… more so your support (left hand) chicken -wing has a metric ton of meat … I really think that you are hitting the overly-engineered Gen5 slide stop (it’s a lot bigger than the gen3/4) with the thick portion of your support thumb…. I only say this because I grip extremely high on my support hand with a Glock and the only remedy was shaving down Gen3 slide stops or buying the KAGwerks slide stop (now my Gen3 and Gen5 19 have it) which ended my pre-mature slide stop issues… YMMV

It is possible. However, I have shot over 20,000 rounds through a Glock 47 and 19 since September, and this is the only instance of this I have experienced with a 19/47. I did experience it twice with a newish Glock 26, replaced the slide stop and have not seen it since. No instances of it with the 43 or 43X either.

I am still waiting for an answer as to what Glock changed with these latest ten round magazines that is different from the older ten round magazines that were problematic. Anyone have one they can disassemble and compare to the new ones?

[eric0311]

Just to clarify, you had issues with the OEM slide stop generally, or with the OEM slide stop and OEM 10 round Glock 19 magazines?

My bad- I posted before I saw this reply:

I experienced issues with standard capacity mags, 15/17/19 rounders… with the G19/45/19X…all with the standard slide stop (gen5) ….I didn’t find, nor do I now, believe it’s a Gen5 10 round magazine issueI found that the beefier slide stop of the Gen5 pistols were being engaged prematurely by my support thumb… in layman’s terms… the “chicken-wing” fatty portion of my support left hand thumb was engaging the more-pronounced Gen5 slide stop… I’ve experienced this since my first Gen5 Glock purchase (2019).. my fail-safe method with the Gen3 slide stop / premature slide lock issue was to grind down the protruding tab…my go-to know, with Gen5 is the KAGwerks slide stop. It… for a lack of a better word… works.

My issue… because of how I grip a Glock, especially the Gen5… was completely removed with the addition of the KAGwerks slide stop. I’ve never experienced a feedway malfunction, to date… with numerous JHP manufacturers, with the Gen5 G19 10 round magazines.

[eric0311]

It is possible. However, I have shot over 20,000 rounds through a Glock 47 and 19 since September, and this is the only instance of this I have experienced with a 19/47. I did experience it twice with a newish Glock 26, replaced the slide stop and have not seen it since. No instances of it with the 43 or 43X either.

I am still waiting for an answer as to what Glock changed with these latest ten round magazines that is different from the older ten round magazines that were problematic. Anyone have one they can disassemble and compare to the new ones?

There was a post by a gent on 3/23/2023, Exuberant… he claimed that the magazine body of the G5–19 10rnd magazine was of the same height proportion of standard capacity gen5 g19 magazines…for what it’s worth….

[GJM]

Here are a few pictures of how I grip the 19.

131530

131531

The only other thing I can think of, is a few weeks ago I added a small piece of traction tape on the side of the frame, just in front of the slide stop. I just removed it, and will try to shoot some more of that ammo in the ten round mags on Sunday.

131532

[eric0311]

Here are a few pictures of how I grip the 19.

131530

131531

The only other thing I can think of, is a few weeks ago I added a small piece of traction tape on the side of the frame, just in front of the slide stop. I just removed it, and will try to shoot some more of that ammo in the ten round mags on Sunday.

131532

You’ve got some big-ol-hands on ya! You don’t appear to even touch the slide stop… at all… now this is a mystery…

I’d say keep trying that 10 rounder… I’m gonna keep beating up my 3 for the communities sake… let’s see what shakes!

[Salamander]

It's been at least three years since I've had a G19, so I no longer have any older mags to look at... I gave up after several years of being unable to get reliability with JHP in 10-round mags (the same pistols ran perfectly with freedom week standard capacity mags). However my issues were not related to slide lock back, rather the issues were consistent FTF. It was rare to get through a magazine without at least one stoppage. This happened with gen 2 and gen 3 G19 examples. Problems were almost exclusively with JHP and heavier (147gr) FP, anything FMJ or coated lead RN or TC functioned well.

My recent tests were with a blue label G34 gen 3 which shipped in spring 2024. There were two stoppages (FTF) on the first range outing, with the black follower magazines. There were no stoppages with those same mags on a more recent outing but with relatively few JHP so not even close to definitive... but the pistol had broken in enough to feel smoother by then. The more thorough tests last week were the same G34 with gen 5 orange follower 10-round magazines just received the day before testing, and as stated above they were loaded full for 24 hours and then the next day there were no stoppages. Same thing again day before yesterday, no stoppages, but I was mostly focused on other things so only had time for a couple of magazines with that setup. I will test some more but things are busy right now and it may be a while.

[eric0311]

I don't know when Glock made these changes, but they did update their 10 round mags, at least the ones for the 19. The new magazines are marked 2274-02 on the rear of the body. The new magazine bodies are longer, closer to the same length of the standard 15 round magazine. These new mags also fit 19s with a magwell, unlike the older ones.

I haven't had any trouble with them, but if you do, you can drop in a 9mm7 follower and they work without modification. You used to have to file either the follower or mag body for them to fit.

This post indicates that the Gen5 G19 10rd magazines (with 2274-02 markings on the tube) are longer, or as long as 15 round magazines. I do not have any Gen3/4 G19 10rd magazines on hand to verify if the changes made included lengthening the magazine body…. Interesting though…

[GJM]

Thinking back, the instances I have had premature slide lock (twice with a newish G5 26 MOS and a ten round standard capacity mag, and once with the G5 19 with the ten round magazine) were shooting groups at 25 yards. All involved 124 Gold Dot (+P in the 26 and standard pressure in the 19).

I decided to focus some testing with the G19 OEM mag and Gold Dot, shooting groups at 25, in case there was something odd I was doing with my grip, while trying to shoot groups.


First ten Gold Dot 124 freestyle at 25 today with the OEM G19 ten round mag. This pistol is zeroed with 124+P HST.

131611


Ten more.

131612



Then ten more twice, for 40 total with no issues. I will keep testing as time allows.

[eric0311]

Thinking back, the instances I have had premature slide lock (twice with a newish G5 26 MOS and a ten round standard capacity mag, and once with the G5 19 with the ten round magazine) were shooting groups at 25 yards. All involved 124 Gold Dot (+P in the 26 and standard pressure in the 19).

I decided to focus some testing with the G19 OEM mag and Gold Dot, shooting groups at 25, in case there was something odd I was doing with my grip, while trying to shoot groups.


First ten Gold Dot 124 freestyle at 25 today with the OEM G19 ten round mag. This pistol is zeroed with 124+P HST.

131611


Ten more.

131612



Then ten more twice, for 40 total with no issues. I will keep testing as time allows.

Thank you GJM for keeping this alive- a lot of folks behind 10 round ban-state lines are watching this … you’re doing the Lords work…. I’ll keep at it as well. So far… so good.

[Singh]

I appreciate GJM's tests. Always great to see stuff like that.


it's bewildering me to me that after more than a decade, Glock can't, and seems to have no interest in, making reliable 10rd mags. How does a company with a reputation of boring reliability sh*t the bed on reduced cap mags?

10rd ban state and you like Glocks? Carry a g26, or do as was mentioned earlier in the thread; Doc's mod on a g19 to accept g26 mags. (https://pistol-forum.com/showthread.php?23204-A-solution-for-illogical-10-rd-mag-limits)

[JonInWA]

I appreciate GJM's tests. Always great to see stuff like that.


it's bewildering me to me that after more than a decade, Glock can't, and seems to have no interest in, making reliable 10rd mags. How does a company with a reputation of boring reliability sh*t the bed on reduced cap mags?

10rd ban state and you like Glocks? Carry a g26, or do as was mentioned earlier in the thread; Doc's mod on a g19 to accept g26 mags. (https://pistol-forum.com/showthread.php?23204-A-solution-for-illogical-10-rd-mag-limits)

That's simply not true in my testing; the Gen5 orange followered 10 round magazines have been reliable for me with both ball and JHP cartridges; in both G17 and G19s; my JHP testing was done with 147 gr Federal HST.

And while not tested as extensively, I've had not problems with the Glock Gen5 .40 magazines with my Gen4 G22, nor with any generation of Glock's 10 round magazines for the G21 (although pretty much an Uplula is mandatory to successfully load rounds 8-10 in them).

Best, Jon

[Singh]

That's simply not true in my testing; the Gen5 orange followered 10 round magazines have been reliable for me with both ball and JHP cartridges; in both G17 and G19s; my JHP testing was done with 147 gr Federal HST.

And while not tested as extensively, I've had not problems with the Glock Gen5 .40 magazines with my Gen4 G22, nor with any generation of Glock's 10 round magazines for the G21 (although pretty much an Uplula is mandatory to successfully load rounds 8-10 in them).

Best, Jon


Yeah, sorry, I forgot about .40s reduced mags being ok *smacks forehead* . Didn't mean to make a sweeping generalization there, but I did so I own that. Glad to hear the reduced cap 9mm mags are working for you with 147g loads. It seems GJM is having issues with 124g?

[JonInWA]

GJM may or may not be having magazine issues; he himself posits the possibility of it being related to his hand positioning or after-market add-ons. I personally run all of my Glocks (and that encompassesses Gen 3, Gen4 and Gen5 guns) with a Glock extended slide release, and have encountered zero issues with both G17 and G19's with Gen5 orange-follower Glock magazines (or, for that matter, with Magpul's 10 round magazines for both) using Federal HST 147 gr JHP's, which I think is one of the more difficult bullet profiles for a pistol to successfully digest-especially the Glock 9mm 10 round magazines.

Additionally, most of mine (except my Gen5 G23, which used the Glock Medium Beavertail backstrap) are being run with a Hogue HandAll Beavertail fitted sleeve, FWIW.

I respectfully suggest that perhaps the sky isn't falling regarding the Glock G17 and G19 Glock 10 round magazines-as long as you stick to the formula of using the Gen5 orange-followered 10 round magazines...or the Magpuls, but I personally prefer the Glock ones for increased durability (at least as I perceive it).

Best, Jon

[Singh]

I respectfully suggest that perhaps the sky isn't falling regarding the Glock G17 and G19 Glock 10 round magazines-as long as you stick to the formula of using the Gen5 orange-followered 10 round magazines...or the Magpuls, but I personally prefer the Glock ones for increased durability (at least as I perceive it).

Best, Jon


No,I’m totally with ya. No panic in the disco over here. For me this is just an intellectual exercise looking at anecdotal data and seeing how this issue is tracking.

[eric0311]

I appreciate GJM's tests. Always great to see stuff like that.


it's bewildering me to me that after more than a decade, Glock can't, and seems to have no interest in, making reliable 10rd mags. How does a company with a reputation of boring reliability sh*t the bed on reduced cap mags?

10rd ban state and you like Glocks? Carry a g26, or do as was mentioned earlier in the thread; Doc's mod on a g19 to accept g26 mags. (https://pistol-forum.com/showthread.php?23204-A-solution-for-illogical-10-rd-mag-limits)

There is some really good data, accumulated in the (now) 7 pages in this thread. It’s a good read… go back and see what a lot of posters have learned about the latest iteration of the G19 10rd magazines… it’s very positive.