ProMag 13 Round .45 ACP Magazine, Black - GLKA14

This magazine will fit a Glock 21 and can hold up to 13-rounds of 45 ACP.ProMag magazines are designed utilizing modern precision injection molding of Mil-Spec polymer compounds. Every ProMag magazine is backed by a lifetime guarantee against manufacturer's defects.Features:Magazine body constructed of a proprietary DuPont Zytel based polymerMagazine body has full length steel internal insert stamped and welded like the factory magazineInjection molded magazine followerSpring is made from heat treated chrome silicon wireMade in USA