ProMag Polymer Drum Magazine AR-15 .223/5.56mm Black w/ Window 65 rd.

Description

This drum fits AR-15 firearms chambered in 5.56mm / .223 Rem. It has a body made of a DuPont Zytel based polymer. It has over molded stamped steel feed lips and magazine catch. Additional components include an injection molded follower and a spring formed from heat treated chrome silicon wire.