The PMAG 30 AR 300 B GEN M3 is a magazine purpose-built for rifles chambered in 300 Blackout ® (300 BLK). Until its creation, shooters utilizing 300 BLK had to use magazines designed for other cartridges which often limited ultimate performance and compatibility due to the potential unreliability of different project weights and profiles. To fully take advantage of the 300 BLK cartridge's compatibility with 5.56x45mm parts, a dedicated magazine was vital for optimal performance.

Moreover, using a 5.56x45mm mag creates a dangerous situation where a 300 BLK round may accidentally be chambered and fired with catastrophic results. To avoid this, PMAG 30 AR 300 B incorporates a distinct rib design and smoother upper-half texture for visual and tactile differentiation, mitigating dangerous cross-loading issues.

The PMAG 30 AR 300 B's specialized design provides optimal reliability and safer chambering of the 300 BLK cartridge. As a part of Magpul's GEN M3 line, it boasts next-generation impact and crush-resistant polymer, aggressive front and rear texture, an easily removable slim floor plate, a paint pen dot matrix for marking and identification, and a dust/impact cover.

This caliber .300 AAC Blackout platform is compatible with most 'STANAG 4179' platforms such as the AR15/M4, FN SCAR, IWI Tavor, and others. Its features and specificity for the 300 BLK cartridge make it the go-to choice, providing an edge in performance and safety over competitors. This magazine, made in the USA, is a reliable choice for 300 BLK shooters seeking optimal performance and safety.

DESIGNED WITH VISUAL & TACTILE DIFFERENCES Distinct rib design and smooth upper-half texture provide visual and tactile differentiation from other PMAGs to mitigate dangerous cross-loading issues
INCORPORATES THE SAME FEATURES AND PERFORMANCE OF THE GEN M3 LINE Next-generation impact and crush-resistant polymer, aggressive front and rear texture, easily removable slim floor plate, a paint pen dot matrix and a dust / impact cover