Mec-Gar 18-Round Magazine for Glock 19 – It's Worth It

If you’re a Glock 19 owner looking to squeeze out a little more capacity without jumping up to a Glock 17 or using bulky extensions, Mec-Gar has something worth checking out: the 18-round magazine built specifically for the G19.

Let’s start with what sets it apart. At a glance, this mag is almost the same size as a standard Glock 17 magazine, but it packs one more round — 18 total rounds of 9mm. No extensions, no gimmicks, just a flush, factory-style magazine made to fit the Glock 19.

This mag uses heat-treated carbon steel for the tube, which feels rock solid in the hand. It’s coated with Mec-Gar’s anti-friction finish, so loading and unloading is smooth, and it doesn’t pick up grime as fast during range sessions.

Inside, it runs a high-tensile music wire spring — the kind of spring you can trust to stay reliable, even when left loaded for extended periods. I’ve had one of these loaded in my Glock 19 for a couple of months now, and it still feeds without issue.

The bright green follower is high-impact, self-lubricating polymer, making it easy to check for an empty mag at a glance, and it slides like butter. This follower, combined with Mec-Gar’s precision-formed feeding ribs, makes for consistent, jam-free operation. You can feel that attention to detail when cycling through a few mags at the range.

One thing to note: this won’t work with the Glock 19X. Also, the floorplate is proprietary — you can’t swap in your standard Glock baseplates. That said, it’s well-built and shrouded, designed to match the grip profile and add a bit of flair and functionality.

As far as reliability goes, Mec-Gar has a long-standing reputation, and in my experience, these mags live up to it. I’ve run several full loads of defensive and ball ammo through this one with no failures to feed or lock back.

For Glock 19 owners who want to carry more rounds without adding bulk or relying on extensions, this magazine makes a lot of sense. It gives you a slight edge in capacity while maintaining a factory-style footprint — no awkward carry profile, no awkward reloads.

Final thoughts? This is a solid, dependable upgrade for anyone who uses a Glock 19 for EDC, home defense, or range use. If you’re someone who values both capacity and reliability, you might want to give this one a closer look.

Watch the video review below to see it up close, and let me know what your experience with Mec-Gar mags has been like.