Magpul PMAG M3 .300 AAC Blackout 30rd Magazine

Magpul PMAG M3 30rd .300 AAC Blackout Magazine — Magazine for AR-platform rifles. This is a 30-round polymer magazine purpose-designed to feed rifles chambered in .300 AAC Blackout.

The PMAG M3 30 AR 300 B provides dedicated feed geometry for .300 Blackout cartridges to improve feeding reliability across a range of projectile weights and profiles. It is intended for use with AR-platform rifles chambered in .300 AAC Blackout and serves as a drop-in replacement magazine for users who want a magazine tailored to this cartridge.

Key Features

• Caliber: .300 AAC Blackout (designed specifically for this cartridge).
• Capacity: 30 rounds.
• Construction: Impact- and crush-resistant polymer (Gen M3 polymer formulation).
• Distinctive rib design and smoother upper-half texture to provide visual and tactile differentiation from 5.56 magazines, reducing cross-loading risk.
• Aggressive front and rear texture for secure handling.
• Easily removable slim floor plate for maintenance and cleaning.
• Paint pen dot matrix for marking and identification.
• Finish: Black.
• Quantity: 1 magazine per pack.

Specifications & Construction

• Material: Polymer (next-generation impact and crush resistant polymer as used in Gen M3 products).
• Caliber: .300 AAC Blackout.
• Capacity: 30 rounds.
• Finish/Color: Black.
• Model Fit / Compatibility: AR-platform rifles (listed as AR-15 / AR Rifles in product attributes).

This PMAG is intended for typical AR-platform setups using a primary optic or iron sights. It is suitable for range use and general-purpose AR-platform applications where .300 AAC Blackout cartridges are used. The magazine’s dedicated design reduces the chance of confusing it with 5.56 magazines and supports reliable feeding across common .300 Blackout projectile types.

Please note the product is furnished as a single magazine (1 pack) and constructed to the Gen M3 PMAG standard features for durability and serviceability.