KRISS MagEx2 Kit G21 .45 ACP Alpine White +17rd Extension

Description

The KRISS MagEx2 Kit takes your standard 13-round Glock 21 magazine and stretches it to a full 30 rounds of .45 ACP. Instead of buying a whole new mag, you reuse the factory body and follower you already trust, then swap in an extended baseplate, an outer sleeve, and a longer spring. That means 17 extra rounds and fewer trips to the reload, whether you're feeding a Glock 21 pistol, a KRISS Vector, or a Glock-compatible pistol caliber carbine.

What Makes the MagEx2 Kit Worth Bolting On

The whole kit is built from reinforced polymer composite, so it stays light even with the added length. The parts are tuned to the caliber, which is why feeding stays smooth and consistent rather than fussy the way some cheap extensions can get. Folks who have run it hard through range sessions report the components hold up to repeated loading, unloading, and firing without cracking, which is exactly what you want out of a part that lives at the business end of your magazine.

Installing the KRISS MagEx2 on Your Glock 21 Mag

Setup is about as simple as it gets. You disassemble your existing Glock 21 magazine, slide the MagEx2 components on, and reassemble. No gunsmithing, no tools, no head-scratching. One thing worth knowing going in: packing all 30 rounds into an extended mag builds up serious spring tension, so a magazine loader like an UpLULA makes topping off a whole lot easier on your thumbs.

Alpine White Finish for a Standout Look

This version comes in Alpine White, which gives your loadout a distinctive look that pairs nicely with matching Vector builds and lighter-colored gear. It's a fit for competition, training, or just stacking up magazine reserves so you spend more time shooting and less time reloading. Keep in mind it's made for factory full-size Glock 21 magazines, so reduced-capacity 10-round mags and aftermarket bodies aren't part of the plan here.