The Lancer Systems L5 AWM Advanced Warfighter 300BLK magazine has been specifically engineered for use with heavy subsonic .300 Blackout ammunition, particularly with 200+ grain projectiles. The updated internal magazine geometry allows these longer heavier bullets to stack properly, which increases feeding reliability when compared to a traditional .223/5.56 magazine. The outside of the mag body is molded with distinctive .300 Blackout markings and the magazine ships with a contrasting flat dark earth floor plate for easy visual identification. Lancer set out to design a better 5.56 magazine; one with the reliability of steel, durability of polymer and weight of aluminum - the L5AWM. The magazine design includes a one-piece, wrap-around steel feed lip assembly and an aggressive surface texture to create the ultimate hybrid magazine tough enough for military, LE and commercial use. The L5AWM is compatible with modern weapon systems, including M4/M16/AR15, SCAR16, HK416, ARX160...