Magpul PMAG 30 AR-15 Gen M3 300 BLK 30rd Magazine

The PMAG 30 AR 300 B Gen M3 is a purpose designed 30 round magazine for rifles chambered in 300 Blackout. 5.56 magazines will feed 300 BLK, but the wide variety of bullet weights and profiles can hurt reliability, and sharing magazines raises the risk of chambering a 300 BLK round in a 5.56 rifle.

Magpul gave this PMAG a distinct rib design and a smoother upper half, so it looks and feels different from any other PMAG and helps cut down on cross loading. It keeps the Gen M3 feature set: impact and crush resistant polymer, aggressive front and rear texture, an easily removable slim floorplate and a paint pen dot matrix for marking.