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The KRISS MagEx2 is a straightforward capacity extension designed to work with your existing Glock 21 magazines. Instead of replacing your mags, you simply install the kit components directly onto the factory magazine body and follower. It's basically a complete baseplate upgrade that bumps your G21 capacity from 13 rounds to a full 30 rounds, making a real difference during longer range sessions or if you're running a KRISS Vector in .45 ACP.
You get three main components: an extended baseplate, an outer sleeve, and a reinforced spring, all constructed from durable polymer composites. The polymer construction keeps weight down while maintaining strength and reliability. Installation is straightforward since everything is designed to work specifically with factory Glock 21 magazines from Gen 3 and later. The kit preserves your original magazine body and follower, so you're not buying a completely new magazine.
This kit is built specifically for the KRISS Vector pistol-caliber carbine platform, but it also works with any Glock 21 magazine-compatible firearm in .45 ACP. The FDE finish matches well if you've got an FDE Vector or similar setup. If you're running Glock 21 handguns or other compatible platforms, the extended capacity can be useful for extended training, competition, or just maximizing what you get out of your practice time. The polymer baseplate and spring handle the increased capacity without compromising feed reliability.
With the extended spring, hand-loading rounds into the magazine becomes progressively harder as you fill it up. It's not a deal-breaker, but people commonly pick up a magazine loader to make life easier, especially when you're loading toward full capacity. It's worth mentioning upfront so you know what to expect.
Yes, the kit is designed specifically for factory Glock 21 standard-capacity magazines from Gen 3 and later. Simply remove the factory baseplate and replace it with the extended components included in the kit. The magazine body and follower stay unchanged. Aftermarket magazines are not guaranteed to work with the extension.
No, installation is straightforward. You remove the factory baseplate from your G21 magazine and replace it with the MagEx2 components. It takes just a few minutes with no special tools required. The extended spring and baseplate work together to give you the full 30-round capacity.
The extension includes a reinforced spring that's under increased tension to reliably feed 30 rounds instead of 13. This tension makes pushing rounds down into a nearly-full magazine physically difficult. Most people use a dedicated magazine loader to avoid hand fatigue, especially during range sessions when you're loading multiple mags.
Absolutely. The kit is specifically engineered for the KRISS Vector platform and works with any factory G21 magazine-compatible Glock firearm in .45 ACP. It's a popular upgrade for Vector owners who want extended magazine capacity without buying new magazines.
| UPC | 811607032963 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | KVA-MX2K45FD00 |
| Caliber/Gauge | .45 ACP |
| Color | Flat Dark Earth |
| Length | 13.7 |
| Model | |
| Package Height | 1.3 |
| Package Width | 6.0 |
| Product Type | Accessory-Magazines |
| Shipping Weight | 0.25 |
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