The KRISS MagEx2 is a capacity-extending baseplate kit designed for standard Glock 21 magazines. The kit includes an extended baseplate, outer sleeve, and an extended spring, all made from reinforced polymer to maintain a lightweight profile. It is caliber-specific for .45 ACP and intended to increase the overall capacity of standard G21 magazines to a stated total. This product does not include the magazine body; it is designed to be used with genuine Glock 21 high-capacity magazines.
Key Specifications
- Model identified as Mag-Ex2.
- Compatible with Glock 21 Gen3–Gen5 13-round magazines.
- Caliber specified as .45 ACP.
- Total capacity listed as 30 rounds when combined with a compatible Glock 21 magazine.
- Extension adds +17 rounds to the factory magazine body.
- Constructed from polymer reinforced composite components.
- Finish listed as Black.
- Package dimensions listed as 1.50 x 6.20 x 14.55.
- Weight listed as 0.30000000000000004 (units not specified in source data).
For range use and extended-capacity applications, the MagEx2 provides a straightforward way to increase a Glock 21 magazine’s capacity while preserving the original magazine body and follower. The reinforced polymer construction keeps added weight low, and the kit’s components are designed to work with genuine G21 high-capacity magazines. Note that increased spring tension can make hand-loading more difficult; a dedicated magazine loader is recommended for ease of use. Magazine not included.
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