Glock Gen 4 Glock 31 .357 Sig 15-Round Factory Magazine

This is a factory 15-round magazine for Gen 4 Glock 31, 32, and 33 pistols in .357 SigWhile Glock pistols do an amazing job of taming the .357 Sig's violent recoil, it's Glock's factory magazine that ensures optimum feeding & reliability despite constant torture and even in the most extreme conditions ...With capacity for 15 rounds of hard-hitting .357 Sig, these Glock factory magazines deliver serious firepower in a standard-sized package. Made from crack-proof polymer and reinforced with steel