The Magpul PMAG® 30 AR 300 B GEN M3 – Medium Coyote Tan (MCT) is a purpose-built magazine engineered specifically for rifles chambered in .300 AAC Blackout®. Unlike standard 5.56 magazines, this dedicated design ensures reliable feeding across the wide range of projectile weights and profiles unique to .300 BLK—making it a critical upgrade for shooters running this caliber.

Constructed with Magpul’s GEN M3 polymer technology, the PMAG delivers exceptional durability with impact- and crush-resistant materials, ensuring consistent performance in harsh environments. The modified internal geometry is optimized to handle both supersonic and subsonic .300 BLK rounds, providing smooth, reliable feeding you can trust.

To prevent dangerous cross-loading, the magazine features distinct visual and tactile identifiers, including a unique rib design and smooth upper texture—allowing immediate differentiation from standard 5.56 PMAGs, even under stress or low-light conditions.

The Medium Coyote Tan (MCT) finish offers a versatile, field-ready appearance that blends well in a variety of environments. Additional features include an aggressive texture for positive handling, a paint pen dot matrix for easy identification, and a removable floorplate for simple maintenance and cleaning.

The PMAG 30 AR 300 B GEN M3 is the reliable choice for maximizing your .300 Blackout platform’s performance.

Proudly Made in the USA.