MAGPUL PMAG M3 300BLK 30RD BLK

The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine engineered specifically for rifles chambered in .300 Blackout. While .300 BLK ammunition can traditionally fit into standard 5.56x45mm magazines, doing so often introduces feeding compromises due to the wide variety of projectile weights and profiles. This dedicated magazine optimizes internal geometry to ensure exceptionally reliable feeding across all bullet profiles, from lightweight supersonic loads to heavy, subsonic configurations.

Beyond enhanced performance, this magazine introduces crucial visual and tactile safety features. It features a distinct external rib design and a smoother upper-half texture, giving shooters an immediate physical indicator to differentiate it from standard 5.56 NATO magazines—significantly mitigating the risk of dangerous cross-loading.

Built with next-generation materials and engineering, it delivers premium durability alongside standard GEN M3 features, including an impact-resistant polymer construction, aggressive front and rear texturing for a secure grip, an easily removable slim floor plate, and a paint-pen dot matrix for quick identification and marking.

Key Features

• Caliber-Specific Performance: Dedicated internal geometry optimized for reliable feeding across the entire spectrum of .300 Blackout bullet weights and shapes.

• Cross-Loading Prevention: Distinct visual and tactile external ribbing prevents accidental cross-loading with 5.56/.223 magazines.

• GEN M3 Durability: Crafted from next-generation impact and crush-resistant polymer to survive the toughest environments.

• Enhanced Grip: Aggressive front and rear textures ensure secure handling and quick magazine changes in all weather conditions.

• Easy Maintenance: Flared, slim floorplate is easy to disassemble for cleaning and fits cleanly into standard magazine pouches.