The MagPul PMAG AR-15 Magazine is constructed from advanced polymers exhibiting superior impact resistance and light weight. The 30-round magazine features a constant curve interior profile for enhanced feeding of cartridges. An anti-tilt follower and high quality stainless steel spring ensure reliable feeding, while the textured magazine body and flared floorplate improve handling over conventional metal-bodied magazines. The PMAG is designed to lock into place reliably on a closed bolt with a full 30 rounds, unlike standard USGI magazines which are generally down-loaded to 28 rounds. The snap-on Impact Cover protects the feed lips from impacts and debris while in storage or during transport, and allows fully loaded magazines to be stored long-term (over 1 year) without compromising the integrity of their feed lips.