Magpul® PMAG 30 AR 300 B GEN M3 300 Blackout 30-Round Magazine
Optimize your 300 Blackout® rifle with the Magpul® PMAG 30 AR 300 B GEN M3, a 30-round magazine purpose-built for 300 BLK. Unlike standard 5.56x45mm magazines that compromise performance, this dedicated magazine enhances reliability across diverse projectile weights and profiles. Its unique rib design and smooth upper texture provide tactile and visual differentiation, reducing the risk of cross-loading 300 BLK rounds into 5.56x45mm rifles, preventing catastrophic errors. Featuring GEN M3 innovations, it includes impact-resistant polymer, aggressive texturing, a slim removable floorplate, and a paint pen dot matrix for easy identification. Made in the USA.
 
30-round capacity optimized for 300 Blackout rifles
Dedicated 300 BLK design for enhanced reliability and safety
Impact-resistant polymer with aggressive front/rear texture
Distinct ribbed design to prevent cross-loading issues
Slim floorplate for easy handling and maintenance
 
Shop the Magpul PMAG 30 AR 300 B GEN M3 for superior 300 Blackout performance and safety!