PROMAG MAG AR-308 LR-308 SR25 308WIN 40RD POLYMER

40-round magazine – Fits AR-308 / .308 Cal AR type rifles using LR-308 (DPMS) or SR-25 pattern magazines – Magazine body constructed of a proprietary DuPont™ Zytel based polymer – Injection molded magazine follower – Magazine spring formed from heat treated chrome silicon wire – Does not fit rifles using Armalite pattern magazines – Made in USA