ProMag AR-308 .308 Caliber 40 Round Magazine-Black

The ProMag AR-308 .308 Caliber 40 Round Magazine fits AR-308 and .308 Cal AR type rifles using LR-308 DPMS or SR-25 pattern magazines. The magazine body is constructed of a proprietary DuPont Zytel based polymer and an injection molded magazine follower. The magazine spring is formed from heat treated chrome silicon wire. This magazine does not fit rifles using Armalite pattern magazine and is made in the USA.