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The KRISS Mag-Ex2 is a capacity extension kit designed for standard Glock 17 magazines in 9mm. It transforms your factory 17-round magazine into a 40-round capacity magazine by replacing the baseplate, outer sleeve, and spring with extended components. The kit is built from durable, lightweight reinforced polymer that holds up through regular use and provides consistent reliable feeding.
Instead of buying a completely new magazine, the Mag-Ex2 lets you upgrade magazines you already own. The kit includes everything needed to convert your existing factory Glock 17 magazine body and follower into a high-capacity option. The extended spring maintains proper tension on all 40 rounds, and the design keeps the magazine's clean look while adding serious firepower to your loadout.
The extension kit works with Glock 17 Gen 3, 4, and 5 standard capacity 17-round magazines only. Installation involves removing the factory baseplate, installing the extended spring and new outer sleeve, then securing the extended baseplate. No gunsmithing required. The kit works well with KRISS Vector platforms and any Glock 17 handgun or magazine-compatible pistol caliber carbine.
This extension solves a real problem with high-capacity Glock mags. Other 33-round extended magazines for the Glock 18 machine pistol are unreliable and bulky, but KRISS engineered the Mag-Ex2 to deliver consistent performance without the awkward size penalty. Reviewers appreciate the build quality and the fact that with 40 rounds loaded, you don't feel the need to do risky mag drops at the range.
No, the Mag-Ex2 works with standard Glock 17 OEM 17-round magazines. You supply the magazine body and follower; the kit provides the new baseplate, sleeve, and spring. The kit will not work with aftermarket magazines or reduced capacity 10-round magazines.
Installation is straightforward and requires no special tools or gunsmithing. You remove the old baseplate using a screwdriver, install the new extended spring, sleeve, and baseplate, then secure everything in place. Most people complete the process in a few minutes.
Yes, the Mag-Ex2 was designed with the KRISS Vector platform in mind and works perfectly with it. It also functions with standard Glock 17 pistols and any Glock 17 magazine-compatible pistol caliber carbine.
The Mag-Ex2 is more reliable and compact than older 33-round designs that rely on monolithic extended bodies. By using a conversion kit approach, KRISS USA achieved higher capacity while avoiding the bulk and reliability issues of oversized magazines.
| UPC | 811607031300 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | KVA-MX2K90BL00 |
| Brand Fit | Glock |
| Caliber/Gauge | 9mm |
| Capacity | 40 |
| Color | Black |
| Length | 17 |
| Model | |
| Model Fit | G17 |
| Package Height | 1.4 |
| Package Width | 6.1 |
| Product Type | Accessory-Magazines |
| Shipping Weight | 0.35000000000000003 |
| Style | Extended |
| Units per Box | 1 |
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