KRISS MagEx2 Extension Kit for Glock 17 – +23 Rounds 9mm

The KRISS MagEx2 Kit extends factory Glock 17 magazines to a 40-round capacity, adding 23 rounds to the standard 17-round magazine. Designed for range use, competition, or backup capacity, this extension kit converts your existing G17 mags into higher-capacity options without requiring a separate magazine body. It's a cost-effective way to increase firepower while maintaining reliable feeding with factory Glock components.

The MagEx2 Kit is constructed from reinforced polymer and installs onto factory Glock 17 magazines by replacing the factory baseplate and follower. Installation requires disassembly of the original magazine but does not require gunsmithing or permanent modification. The kit includes the extension body, a new follower, and a magazine spring rated for the extended capacity. Note that extended magazines may not be legal in all jurisdictions—verify local laws before purchase.

• Part Type: Magazine Extension Kit
• Compatible Firearms: Glock 17 (9mm)
• Capacity: +23 rounds (40 total with factory G17 mag)
• Material: Reinforced Polymer
• Installation: User-installable, requires magazine disassembly
• Includes: Extension body, follower, spring