
Availability: In Stock
The KRISS USA MagEx2 Extension Kit in Flat Dark Earth gives your Glock 21 magazines a serious capacity boost. If you run a KRISS Vector, a Glock 21, or any magazine-compatible pistol caliber carbine in .45 ACP, this kit transforms a factory mag into a 30-round powerhouse—more ammunition between reloads without swapping platforms. The MagEx2 achieves this through a purpose-built extended base plate assembly and matching spring, both engineered from reinforced polymer composites that keep weight down while staying tough.
This is one of those parts that makes sense if you're serious about capacity but don't want to compromise reliability. The kit works with any standard Glock magazine body and follower from Gen 3 forward—so you're not buying whole new magazines, just upgrading what you've got. The Flat Dark Earth finish blends seamlessly with modern tactical setups, and the aesthetic consistency across your mag tubes matters when you're running a precision platform like the Vector.
Installation is straightforward: you're swapping the base plate and spring from your factory magazine with the extended versions from this kit. The result is a magazine that feeds just like your original but holds significantly more ammunition. For .45 ACP shooters, jumping from 13 rounds to 30 is the kind of practical upgrade that changes how you train and compete.
| Brand | KRISS USA |
| Model | MagEx2 Extension Kit |
| Caliber | .45 ACP |
| Magazine Compatibility | Glock 21 (Gen 3 and later) |
| Extended Capacity | 30 rounds |
| Material | Reinforced polymer composite |
| Color | Flat Dark Earth (FDE) |
| Includes | Extended base plate outer sleeve, extended spring |
The MagEx2 kit is designed for standard Glock 21 magazines from Gen 3 and later. You'll need the factory magazine body and follower; the kit supplies the extended base plate and spring.
Yes. The MagEx2 kit is purpose-built for KRISS Vector platforms chambered in .45 ACP, as well as other Glock magazine-compatible pistol caliber carbines.
The kit includes the extended base plate outer sleeve and extended spring. You supply your own standard Glock 21 magazine body and follower to complete the assembly.
A Glock 21 magazine with the MagEx2 kit holds 30 rounds of .45 ACP ammunition.



SKU: 115667503 • Width: 6in • Height: 1.25in • Depth: 18in • Weight: 0.31oz





Availability: In Stock
The KRISS USA MagEx2 Extension Kit in Flat Dark Earth gives your Glock 21 magazines a serious capacity boost. If you run a KRISS Vector, a Glock 21, or any magazine-compatible pistol caliber carbine in .45 ACP, this kit transforms a factory mag into a 30-round powerhouse—more ammunition between reloads without swapping platforms. The MagEx2 achieves this through a purpose-built extended base plate assembly and matching spring, both engineered from reinforced polymer composites that keep weight down while staying tough.
This is one of those parts that makes sense if you're serious about capacity but don't want to compromise reliability. The kit works with any standard Glock magazine body and follower from Gen 3 forward—so you're not buying whole new magazines, just upgrading what you've got. The Flat Dark Earth finish blends seamlessly with modern tactical setups, and the aesthetic consistency across your mag tubes matters when you're running a precision platform like the Vector.
Installation is straightforward: you're swapping the base plate and spring from your factory magazine with the extended versions from this kit. The result is a magazine that feeds just like your original but holds significantly more ammunition. For .45 ACP shooters, jumping from 13 rounds to 30 is the kind of practical upgrade that changes how you train and compete.
| Brand | KRISS USA |
| Model | MagEx2 Extension Kit |
| Caliber | .45 ACP |
| Magazine Compatibility | Glock 21 (Gen 3 and later) |
| Extended Capacity | 30 rounds |
| Material | Reinforced polymer composite |
| Color | Flat Dark Earth (FDE) |
| Includes | Extended base plate outer sleeve, extended spring |
The MagEx2 kit is designed for standard Glock 21 magazines from Gen 3 and later. You'll need the factory magazine body and follower; the kit supplies the extended base plate and spring.
Yes. The MagEx2 kit is purpose-built for KRISS Vector platforms chambered in .45 ACP, as well as other Glock magazine-compatible pistol caliber carbines.
The kit includes the extended base plate outer sleeve and extended spring. You supply your own standard Glock 21 magazine body and follower to complete the assembly.
A Glock 21 magazine with the MagEx2 kit holds 30 rounds of .45 ACP ammunition.
SKU: 115667503 • Width: 6in • Height: 1.25in • Depth: 18in • Weight: 0.31oz


