Which factory extended mags do you trust?

[fatdog]

Some comments in the LAPD bans them thread got me thinking about this. I would not trust my Taylor Freelance or other +5 or +6 magazine extensions for raceguns as "street worthy" or something I would put in a defensive firearm, home or even the reload for a concealed gun. But on the other hand, there are some factory or aftermarket extended magazines I do trust in a defensive firearm.

Curious as to what others here think belongs (or not) on that list of factory extended mags that are satisfactory for duty or self defense use.

Based on my personal range experiences with them, lack of any malfunctions, I WOULD TRUST

Mec-gar +2 factory extended mags for P226, P229
Sig factory 21 round mags for the P320/250 9mm platforms
Beretta PX4 20 round 9mm magazines
Glock +2 extensions for their 9mm magazines (unless they were frequently getting dumped on the concrete in that use case)
HK full metal lined versions of the Jet Funnel mags for the USP 9mm
HK factory 20 round 9mm mags for the P30 (also fit the P2000, VP9, USP/c)

[John Hearne]

I'd limit the Sig P320 magazines to pistols with a full-size grip. If it's a compact or sub-compact grip module, over insertion is a possibility.

[vcdgrips]

None based on the OEM +2 Glocks I have used and the 10 Round Wilsons for a 1911.

My sample group is admittedly small and 20 + years old

I actually run 8 in a 1911 using a purpose designed 8 rd mag ( Wilson ETM) in .45 1911s and I down my G17/19/22/23 mags by one.

Of course I download 2 on a magpul mag for an AR as well.

Color me crazy I know given the statistical likelihood of having to reload at all, let alone on a full chamber.

YMMV greatly.

[GlockenSpiel]

From personal experience, Glock 33 round 9mms and Beretta 30 round 92 magazines, but I would probably tend to trust any extended duty mag from either of those companies.

I have not had any issues with the HK 16 round USP .40 mags, though I'm told those are not duty mags for some reason.

I am skeptical in general about just throwing on a +2 to a factory mag, though Glock probably does that for 12 round or 19 round mags.

[GJM]

I believe Mesa PD approved the Henning 140mm base pads for Glock 17 mags.

[Clusterfrack]

The CZ OEM +2 bases for P07 are good. But I’ve put 1000s of rounds through P07s from 23 round 140mm Shadow2 mags (CZ75 format) without issues (other than not locking back on empty).

[Hambo]

Beretta 92/M9-Mec-gar 20rd (+2), Beretta 20rd.

[Le Français]

Glock 33, 24, and 19-round 9mm mags are good in my experience.

ETA: I’ve also had one trouble-free 22-round .40 Glock mag.

[FNFAN]

I’ve never had an issue with the 22 round .40 factory Glock mags. Wilson makes nifty 15 round mags for the EDC X9s that prevent over-insertion and give a good place for the little finger to hang out -you do have to be more aware of printing. I would have never carried an add on or +2 for duty use just out of concerns for their ruggedness.

[Default.mp3]

Some comments in the LAPD bans them thread got me thinking about this. I would not trust my Taylor Freelance or other +5 or +6 magazine extensions for raceguns as "street worthy" or something I would put in a defensive firearm, home or even the reload for a concealed gun. But on the other hand, there are some factory or aftermarket extended magazines I do trust in a defensive firearm.

Why would you not trust the TF extensions?