The L5AWM Magazine is built with the reliability of steel, durability of polymer, and weight of aluminum. The magazine design includes a one-piece, wrap-around, steel feed lip assembly and an aggressive surface texture to create the ultimate hybrid magazine.The constant curve internal geometry of the Advanced Warfighter Magazine utilizes an anti-tilt follower for reliable feeding of .223 Rem/5.56 NATO ammunition. The body and component materials are corrosion and chemical resistant, passing military chemical testing. This AR mag is also compatible with many other rifle systems such as the M4, M16, SCAR16, HK416, ARX160, and SIG MCX.Features: Hardened steel feed lips Impact resistant polymer body Top of magazine catch is steel Non-tilt follower Constant curve internal geometry Stainless steel spring Aggressive texturing on body for positive grip Slim body design Slide on bottom, easy to disassemble Round count markers Weight: 4.48 oz Made in the U.S.A.From concept through production, Lancer Systems engineer solutions that make a difference. Whether in the hands of service members or commercial customers, their products will provide a definitive advantage. Lancer designs, develops and tests all advanced weapons and components in-house.