Glock Gen 5, OEM barrels

[GJM]

I experienced something today, with a non OEM barrel in a G5 19, that I wanted to share.

Lately, I have incorporated shooting a B8 freestyle at 25 yards, into nearly every one of my practice sessions. Freestyle group shooting is a perishable skill, that I want to maintain, and the process of shooting a B8 is also an excellent check on my ammo, the pistol, and the optic. I shoot a B8 with a number of my competition and EDC Glock pistols, so I get to see a number of different pistols. My experience is that the OEM barrels shoot very well, and are capable of keeping ten out of ten shots in the black at 25, as long as I am doing my part. There may be some slight variation depending on how good my trigger press is on any day, how an individual trigger is, but the difference is an all black group, and a group much smaller.

For reference, the first thing I did yesterday was to shoot a 25 yard group with a G47 and Lawman 124. This was the group.

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I did the same 25 yard freestyle group first thing today, with a different G47 and Lawman.

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Part way through my practice, I shot a 25 yard group with a G5 19 that had a Mayhem Syndicate barrel and comp. I pressed the trigger as I normally do, went down and saw a surprisingly crappy group. I repeated with another ten rounds, and got an almost identical group, with three rounds in the 7 ring.

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I disassembled my carry 19, pulled the OEM Marksman barrel, installed it in place of the barrel/comp, and shot a few groups. Now the pistol shot into the black as I am used to seeing.

Given how well the OEM G5 Marksman barrels shoot, I am really questioning using anything but an OEM barrel in a Gen 5 Glock.

[Joe Mac]

Every one of my gen 5 9mms will turn in a 1" group offhand at 15 yards with Gold Dot or HST, if I don't blow it out my ass. That's me on a *good* day, not a typical one, because I'm not as good a shooter as you!

[RJ]

Thanks GJM, useful info as always.

Do you think it was the Mayhem barrel, or the comp, at work here?

[Steve m]

I went down the kkm
Barrel road with my gen5 g19. Couldn’t tell the difference. All my gen 5s shoot better than me.

Steve

[GJM]

Thanks GJM, useful info as always.

Do you think it was the Mayhem barrel, or the comp, at work here?

Not sure. I have also found the 365 3.1 OEM barrel to be more accurate than my PMM barrel and comp combo.

[Noah]

I love the OEM Gen 5 barrel and would never choose to replace one. However, my 34 came with a blingy stainless ZP barrel that I hated aesthetically, and I replaced it with a $40 Aim Surplus black barrel, which had not failed in about 600 rounds and will hold the black at 25y with every ammo I’ve shot through it (124 GD and a few brands of brass 124).

I would like to get an OEM barrel and have missed a good deal or two on eBay, but my discretionary gun budget is very small so it’s very hard to justify when this super cheap one seems fine.

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[mizer67]

My experience mirrors yours at 25 yds on B8's.

Unless something is out of spec., I don't see the need to rebarrel any Gen5. I would go so far as to say mine are all capable of holding the 10 ring if I do my part with a known good load. I am confident that if something's out of the black, it's not the barrel or the gun.

I did rebarrel almost all of my Gen4's and saw a difference.

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[ASH556]

My Gen 5 OEM barrels in G45's and G19's will produce 2" 10 round 25yd freestyle groups with decent ball ammo (Lawman, Fiocchi). I'm not sure you can get a Glock much better than that. It's certainly diminishing returns at that point given my skill level and increasingly less commitment to regular practice.

[KevH]

For my Gen3 guns I prefer KKM or Wilson Combat barrels.

I tried putting a KKM in my Gen5 G19 and it offered no noticeable improvement.

Glock did it right with the barrel in the Gen5. No need to mess with it.

[45dotACP]

Apropos of nothing...but I have heard the gen 5 barrels for the 19s will fit in a gen 3 g19.

Is this true?

[GJM]

Apropos of nothing...but I have heard the gen 5 barrels for the 19s will fit in a gen 3 g19.

Is this true?

Yes

I remember discussing this on PF several years ago. A good project, would be to shoot a GEN three pistol with its OEM barrel, and then switch to a GEN five and shoot groups again.

[Mjolnir]

About the only barrel that shoots as well or better than the Marksman Barrel is the Radian Ramjet Afterburner barrel (which does have a match chamber I’m told).

[willie]

Please cancel.

[Simong]

About the only barrel that shoots as well or better than the Marksman Barrel is the Radian Ramjet Afterburner barrel (which does have a match chamber I’m told).

My G19 Gen-4 has a Gen-5 Marksman barrel and produces tighter groups than the Radian Ramjet AB especially with crappy training ammo.

Simong.

[Texaspoff]

In my experiences the marksman barrels are capable of more mechanical accuracy than some aftermarket, and all previous factory generation barrels.

https://i.imgur.com/EAtIFECl.jpg
https://i.imgur.com/wWXWpTKl.jpg?1




TXPO