Magpul Polymer 30rd .223 AR15/M16 PMAG Maglevel Magazine The PMAG (Polymer MAGazine) is a lightweight 5.56 NATO (.223), M-16/AR15 compatible magazine. It features a pop-off storage/dust cover that alleviates pressure from the magazine feed lips, allowing for long-term storage of loaded magazines without risk of feed lip creep that often causes malfunction in standard aluminum magazines. PMAG utilizes a resilient stainless steel spring for corrosion resistance. The MagLevel PMAG features transparent windows and a painted spring for quick determination of approximate round count. Features Constant-curve internal geometry for smooth feeding Anti-tilt follower for increased reliability Storage/dust cover Stainless steel spring for corrosion resistance Textured gripping surface Ambidextrous MagLevel round indicator windows