PROMAG DRUM AR-15 5.56 BLK 65RD POLY W/WINDOW

65-round drum magazine with window – 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