ProMag AR-15 5.56mm 40-Round Steel-Lined Magazine with Roller Follower

A favorite among civilian and professional shooters alike, the ProMagA(R) AR-15 5.56mm 40-Round Steel-Lined Magazine with Roller Follower is an affordable aftermarket magazine, featuring a steel-lined Technopolymer body, designed to deliver exceptional durability, while over-molded stamped steel feed lips offer a snug, wobble-free fit for reliable operation. A heat-treated, anti-fatigue, chrome silicone wire internal spring, coupled with the proprietary Roller follower, eliminates binding and de