Promag Polymer Magazine Ar-15 .223/5.56mm Black Steel Lined 40 Rd.

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.

Features:Fits AR-15 5.56mm / .223 Rem firearms;Over molded stamped steel feed lips and magazine catch;Magazine body constructed of a proprietary DuPont Zytel based polymer;Patented anti-tilt Roller follower;Spring formed from heat treated chrome silicon wire