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Designed by shooting instructor Larry Vickers and built by TangoDown, this GMR-004 extended magazine release solves a problem plenty of folks run into with large frame Glocks: reaching the mag button without rolling your hand off the grip. The button sits a touch proud of the frame with a radiused, serrated face, so your thumb finds it and drops the mag while your firing grip stays put. It's molded from the same polymer as the Glock factory part, so it blends right in and holds up to real use.
This is the large frame version, cut for Gen 4 Glock models chambered in .45 ACP and 10mm. It works with the G20, G21, G29, G30, and G41. It's built specifically for Gen 4 architecture, so it won't play nice with Gen 1, 2, or 3 pistols. If you carry ambidextrously or shoot support-side, the release is ambi-friendly and works from either side.
The smart part of the Vickers design is restraint. TangoDown kept the extension short enough that it won't dump your magazine if you set the pistol down on a hard surface or bump it against a bench, but long enough that folks with average to smaller hands can hit it clean during a reload. It also plays well with backstrap-mounted lasers, so you're not fighting your accessories. Reviewers tend to describe it as OEM-plus: not a dramatic reach extension, but a more ergonomic, better-shaped button that makes reloads more repeatable.
Installation is straightforward and takes just a few minutes with basic tools, though a gunsmith can knock it out fast if you'd rather hand it off. Overall length runs about 1.31 inches and it weighs in at roughly 0.2 ounces, so you're not adding any real bulk. Like the rest of the GMR line, it's made in the USA and built to give you a long service life.
It's cut for large frame Gen 4 Glocks chambered in .45 ACP and 10mm, specifically the G20, G21, G29, G30, and G41. It's built for Gen 4 frames only, so it won't fit Gen 1, 2, or 3 pistols. If you're running a Gen 4 large frame Glock, this is the right catch.
The Vickers design is intentionally subtle. It extends and radiuses the button just enough to reach without shifting your firing grip, but not so far that the magazine drops when you lay the pistol on a hard surface. Think of it as an ergonomic, OEM-plus improvement rather than a dramatically longer paddle.
Installation is quick and direct, swapping out the factory catch with basic hand tools in a few minutes. Plenty of folks handle it themselves using online guides, though a gunsmith can do it fast if you'd rather not fuss with it. It drops in without any modification to the frame.
Yes. The Vickers release is designed to work alongside backstrap-mounted laser units, so you won't have to choose between the two. It stays out of the way while still giving you a cleaner reach on the mag button.
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