PMAG 20 AR 300 B GEN M3, 300 BLK

PMAG 20 AR 300 B GEN M3 is a purpose-built magazine for AR-15 rifles chambered in .300 AAC Blackout. It delivers the same consistent feeding across a wide range of 300 BLK projectile weights and profiles as Magpul's 30-round 300 BLK PMAG, but with a 20-round capacity and a more compact package for maneuverability and prone use. The distinct rib and upper texture differentiate it from 5.56 magazines. With GEN M3 materials and engineering, it combines impact- and crush-resistant polymer with proven feeding geometry for dedicated 300 BLK performance. Made in the USA. Features: - Patented internal geometry to handle a wide variance in 300 BLK projectiles - 20-round capacity in a compact magazine for improved maneuverability and prone use - Visual and tactile differentiation to reduce cross-loading with 5.56 PMAGs - GEN M3 standard features - Compatible with PMAG accessories and Tactile Lock Plates - Paint-pen dot matrix - Removable floorplate for easy maintenance