PROMAG FOR GLOCK 21 45ACP 40RD DRM

ProMag Industries Drum Magazine, 45 ACP, 40 Rounds, Fits Glock 21, Polymer, Black DRM-A37
ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturer's defects. Magazine springs are precision wound using heat-treated chrome silicon wire and each and every step of the assembly process is checked and double checked in order to maintain the same consistent level of quality.