KRISS USA MagEx2 Extension Kit for Glock 17 Magazines - Alpine White
- Firearm Make Fit:
- Glock
- Caliber-Gauge:
- 9mm Luger
The KRISS USA MagEx2 Extension Kit for Glock 17 Magazines adds serious capacity to your factory Glock magazines without replacing them entirely. This polymer base plate system works with Gen 3 and later Glock magazines, transforming your standard G17 into a 40-round magazine—a meaningful boost for range sessions, competition, or any shooting where you want fewer reloads. If you're running a KRISS Vector or any Glock magazine-compatible pistol caliber carbine, the MagEx2 is engineered to feed reliably while maintaining that clean, tactical look.
The kit includes an extended base plate outer sleeve and an extended spring, both molded from reinforced polymer composite. That means lighter weight than metal alternatives, no added heft that throws off your gun's balance, and straightforward assembly—you keep your factory Glock magazine body and follower, drop in the MagEx2 components, and you're done. The Alpine White finish pairs naturally with the KRISS Vector platform, though note that the MagEx2 kit uses polymer rather than the Cerakote finish of the firearm itself, so there will be a subtle aesthetic difference.
This extension is caliber-specific: this version is designed for 9mm and works exclusively with standard-capacity G17 magazines. If you shoot 10mm or .45ACP, you'll need the appropriate kit for those platforms. Whether you're stocking up for the range or looking to maximize firepower at a match, the MagEx2 gives you a practical way to extend capacity without buying entirely new magazines.
Key Features
- Extends Glock 17 magazine capacity to 40 rounds of 9mm
- Compatible with Gen 3 and later Glock magazines
- Works with KRISS Vector and Glock magazine-fed pistol caliber carbines
- Lightweight reinforced polymer construction
- Includes extended base plate sleeve and extended spring
- Retains factory magazine body and follower for proven reliability
- Alpine White finish
Specifications
| Brand | KRISS USA |
| Product Type | Magazine Extension Kit |
| Caliber | 9mm |
| Fits Magazine | Glock 17 (Gen 3 and later) |
| Extended Capacity | 40 rounds |
| Material | Reinforced Polymer Composite |
| Color | Alpine White |
| Includes | Extended Base Plate Outer Sleeve, Extended Spring |
Frequently Asked Questions
Will the MagEx2 work with my Glock 17?
Yes, the MagEx2 Extension Kit is designed for standard-capacity Glock 17 magazines and is compatible with Gen 3 and later versions. You keep your factory magazine body and follower and simply add the extended base plate sleeve and spring.
Can I use this kit with my KRISS Vector?
Absolutely. The MagEx2 is engineered specifically for the KRISS Vector platform and will feed reliably in that firearm. It also works with any Glock magazine-compatible pistol caliber carbine chambered in 9mm.
What's included in the kit?
The kit contains an extended base plate outer sleeve and an extended spring. These components attach to your existing Glock 17 magazine body and follower to achieve the 40-round capacity.
How does the Alpine White finish compare to my KRISS Vector?
The Alpine White MagEx2 kit uses polymer construction, while the KRISS Vector in Alpine is finished with Cerakote. There will be a noticeable aesthetic difference in finish and appearance between the two, though they complement each other functionally and visually on the platform.

