Magpul PMAG Gen M3 30AR 300B 30rd Magazine

The Magpul PMAG Gen M3 30AR 300B is a purpose-designed polymer magazine for rifles chambered in .300 AAC Blackout. Its feed geometry and Gen M3 improvements address the varied projectile profiles of .300 Blackout to promote more reliable feeding. Distinct ribbing and a smoother upper-half texture provide a clear visual and tactile cue to help reduce the risk of cross-loading with 5.56 magazines.

Key Specifications

• The magazine capacity is 30 rounds.
• The cartridge compatibility is .300 AAC Blackout.
• The model designation is PMAG Gen M3 (30AR 300B).
• The construction material is polymer with next-generation impact and crush resistance.
• The finish and color is black.
• The intended platform fit is AR-platform / AR rifles.
• The magazine includes a slim removable floor plate for maintenance and serviceability.
• The exterior features aggressive front and rear texture for secure handling.
• The body incorporates a paint pen dot matrix for marking and identification.
• The design includes a distinct rib and smoother upper-half texture to help distinguish it from 5.56 magazines.

Built for shooters who value reliable feeding, ease of maintenance, and durable construction, the PMAG Gen M3 30AR 300B combines practical, field-proven features with straightforward serviceability. Its thoughtful design makes it a practical addition to range gear, training equipment, or field use for informed users seeking dependable magazine performance.