The KRISS MagEx2 Kit is the ultimate capacity extending base plate for your factory standard Glock 17 magazines designed for Gen 3 and later models. This complete kit extends your standard capacity magazine to 40 rounds of 9mm ammunition.KRISS MagEx2 Kit for Glock 17 magazines40-round total capacity (adds 23 rounds to standard magazine)Includes extended baseplate outer sleeve and extended springCompatible with Gen 3 and later Glock magazinesConstructed of durable and lightweight reinforced compositesDesigned for KRISS Vector Glock handguns and Glock magazine-compatible PCCsCaliber-specific design for optimal reliability and feedingPerfect for KRISS Vector owners competitive shooters and tactical applications where extended magazine capacity is essential. The MagEx2 Kit combines reliable feeding toughness and aesthetics for professional and recreational use.