ProMag Polymer Magazine AR-15 .223/5.56mm Black Steel Lined 40 rd.

Description

This magazine 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 a patented anti-tilt Roller follower and a spring formed from heat treated chrome silicon wire.