Lancer L5 AWM Smoke 300 AAC Blackout Rifle Magazine - 30 Rounds - Specifically engineered for use with heavy subsonic .300 Blackout ammunition (200+ grain), the Lancer L5AWM 300BLK magazine features an updated internal geometry which allows longer heavier cartridges to stack properly, increasing feeding reliability. 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. Features Made in the USA ; Specifically engineered for 200+ grain subsonic ammunition; Stamped with 300 Blackout markings for caliber organization; Contrasting FDE floorplates provide instant visual identification;