Purpose-built Magpul magazine for 300 Blackout rifles. Features optimized internal geometry, distinctive rib design to prevent cross-loading, and Gen M3 impact-resistant polymer construction. 30-round capacity.
The Magpul PMAG 30 AR Gen M3 is a dedicated magazine engineered specifically for rifles chambered in 300 Blackout. Unlike universal magazines designed for multiple cartridges, this purpose-built design optimizes reliability and safety for your 300 Blackout platform.
One of the critical advantages of a dedicated 300 Blackout magazine is accident prevention. When using standard 5.56x45mm magazines with 300 Blackout ammunition, there's a dangerous risk of cross-loading—inadvertently chambering a 300 Blackout round in a 5.56x45mm rifle, which can result in catastrophic failure. The PMAG 30 AR Gen M3 solves this problem through:
This magazine incorporates all the proven features of Magpul's Gen M3 platform:
With 30-round capacity and optimized feeding geometry, the PMAG 30 AR Gen M3 delivers the reliability and performance your 300 Blackout rifle demands, whether you're shooting subsonic loads or supersonic rounds.