PROMAG DRUM 50RD AR-308 LR-308 SR-25 BLK POLYMER

50-round drum Magazine – Fits most AR-308 / .308 Cal AR type rifles using LR-308 (DPMS) or SR-25 pattern magazines – Over molded stamped steel feed lips and magazine catch – Magazine body constructed of a proprietary DuPont™ Zytel® based polymer – Injection molded magazine follower – Heat treated stainless steel magazine spring – Patented Design – Does not fit rifles using Armalite pattern magazines – Made in USA