Lancer L5AWM 300 Blackout 10-Rd Opaque Black AR-15 Magazine

The Lancer L5AWM in 300 Blackout is a purpose-built 10-round AR-15 magazine engineered specifically for heavy subsonic 300 AAC Blackout loads. Unlike a standard 5.56-pattern magazine, the L5AWM 300BLK uses updated internal geometry with a tighter feed setup to reliably cycle 200+ grain subsonic projectiles without the bolt-over-base failures common to 5.56-pattern mags in this role.

The body is molded from impact-resistant polymer with steel feed lips, giving you the strength of steel at the feed and the lightweight, corrosion-resistant handling of polymer everywhere else. The magazine weighs in at just 2.4 oz, an ideal match for short-barreled, suppressed 300 BLK builds that already balance a heavy can on the muzzle.

Finished in Opaque Black, this 10-round magazine carries the same low-glare matte texture as Lancer's well-known L5AWM line. It drops into any standard AR-15 lower receiver chambered in 300 AAC Blackout and is Made in the USA. If your 300 BLK pistol or SBR lives suppressed and runs the heaviest subs, the L5AWM 300BLK is the magazine purpose-built for that mission.