Magpul PMAG 30 AR 300 B GEN M3 Features The Magpul PMAG 30 AR 300 B GEN M3 is engineered specifically for 300 Blackout cartridges to ensure consistent reliable feeding. This 300 Blackout AR magazine features a distinct rib design and smoother upper-half texture that provide clear visual and tactile differentiation from standard 5.56 magazines helping mitigate dangerous cross-loading issues. Built with next-generation impact and crush resistant polymer it withstands demanding use in range and field environments. Aggressive front and rear texturing improves grip and control while the slim removable floorplate allows for easy maintenance. A paint pen dot matrix on the base aids in marking and identification for organized load management. Magpul PMAG 30 AR 300 B GEN M3 Specifications Manufacturer: Magpul Model: PMAG Series: GEN M3 Category: Magazines Caliber: 300 Blackout Capacity: 30rd Color: OD Green Material: Polymer Length: 7.50 inch Weight: 5 oz Style: Detachable Model Fit: AR15 300 Blackout