With the success of its high-capacity AR-15/M-16 magazines, Brownells has expanded its selection to include a 20-round magazine for shooters who need or want the traditional form of a straight body design. The straight body magazines feature a specially engineered follower designed specifically to function correctly in the magazine's straight body, and heavy-duty aluminum bodies manufactured and heat treated to MIL-STD specifications to ensure proper fit and function. The magazines are spot-welded, MIL-STD hard coat anodized and dry-lube coated to provide years of 'hard knock' use.