Promag Polymer Drum Magazine Ar-15 Glock 9mm Black 30 Rd.

This drum magazine from ProMag has a hybrid design body with a stamped steel upper section, over molded DuPont Zytel based polymer. It features an injection molded magazine follower and a spring formed from heat-treated chrome silicon wire.

Features:Fits 9mm AR-15s with Glock magazines;Drum housing constructed of a proprietary DuPont Zytel based polymer;Magazine upper tower has full length steel internal insert, stamped and welded like the factory magazine;Injection molded magazine follower;Spring formed from heat treated chrome silicon wire