Glock G31 357 Sig Polymer

This is a factory 15-round magazine for Gen 3 and 4 Glock 31, 32, and 33 pistols chambered in .357 SIG. Made from crack-proof polymer with a hardened steel insert, the magazine ensures optimum feeding and reliability even in extreme conditions. It features a polymer base pad, black finish, and is engineered to deliver consistent feeding from the first round to the last. The magazine is designed by Glock to the same exacting quality standards and is compatible across the full .357 SIG Glock lineup. It is built with strong springs that break in over time to improve ease of loading. Ideal for duty, range training, competition, or home defense.