ProMag AR-15 5.56mm Roller Follower 30 Round Magazine-Black

The ProMag AR-15 5.56mm Roller Follower 30 Round Magazine fits AR-15 5.56mm rifles. The magazine body is constructed of a proprietary DuPont Zytel based polymer and a patented anti-tilt roller follower. The magazine spring is formed from heat treated chrome silicon wire and is made in the USA.