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When it comes to AR-15 magazines, you want one that will work flawlessly every time no matter what conditions you find yourself in. The Magpul PMAG 30 AR 300 B Gen M3 is a 30 round .300 AAC Blackout polymer magazine for AR15/M4 compatible weapons. Along with expanded feature set and compatibility, the GEN M3 incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications. The M3 magazines have modified internal and external geometry which also permits operation with a wide range of non Colt-spec platforms such as the HK 416 and MR556A1, M27 IAR, British SA-80, FN SCAR MK 16/16S, and others. A redesigned bolt catch notch in the rear of the magazine provides increased bolt catch clearance, while an over-travel stop on the spine helps ensure the magazine will not over-insert on compatible weapons.

Specifications and Features:
Magpul Industries PMAG MAG800BLK
30 Rounds
.300 AAC Blackout
The PMAG 30 AR 300 B’s distinct rib design and smoother upper-half texture provides the shooter a distinct visual and tactile difference from any other PMAG
Dedicated, purpose-designed magazine for rifles chambered in .300 AAC Blackout 
Optimized internal geometry accommodates the wide variety of bullet profiles used in .300 AAC Blackout cartridges
Non-Windowed
Magpul Gen 3
Constant curve body
Anti-tilt, self lubricating follower
Long life USGI-spec stainless steel spring
Over-travel insertion stop on the spine
Ribbed griping surface
Paint pen dot matrix panels on the bottom of the body for marking
Flared floor plate
Pop-off impact/dust cover to minimize debris intrusion
Polymer Magazi ne
Black

Fits:
Standard Pattern AR-15 Rifles and similar clones