PROMAG DRUM AR-15 5.56 223REM BLY POLY 100RD

100-round drum magazine – Fits AR-15® 5.56mm / .223 rifles – Over molded stamped steel feed lips and magazine catch – Magazine body constructed of a proprietary DuPont™ Zytel® based polymer – Injection molded follower – Magazine spring formed from heat treated chrome silicon wire – Made in USA