The Lancer Systems Lancer L5AWM 300BLK 10RD Opaque Black magazine is purpose-built for shooters running heavy subsonic .300 AAC Blackout ammunition. Featuring the L5 Advanced Warfighter Magazine design with steel feed lips and a rugged polymer body, this compact 10-round magazine offers reliable performance and easy identification thanks to its molded .300 Blackout markings and contrasting flat dark earth floor plate.

This magazine is optimized for 200+ grain subsonic .300 Blackout loads, using updated internal geometry to ensure longer, heavier cartridges stack correctly and feed smoothly compared to traditional .223/5.56 magazines. Ideal for range use, hunting, and training with AR-15 platforms chambered in .300 Blackout, it provides dependable function in a low-profile form factor. The thoughtful engineering and attention to detail reflect Lancer Systems’ reputation for durable, innovative magazine designs.

Key Features:

• Manufacturer: Lancer Systems
• Model: L5AWM 300BLK 10RD Opaque Black
• Caliber: .300 AAC Blackout
• Platform: AR-15
• Capacity: 10 Rounds
• Magazine Body: Polymer with steel feed lips
• Floor Plate Color: Flat Dark Earth
• Special Design: Updated internal geometry for heavy subsonic .300 Blackout
• Markings: Distinctive .300 Blackout molded markings