When your rifle is chambered in 300 Blackout®, you need a magazine specifically built for that round. The PMAG 30 AR 300 B GEN M3 is uniquely designed for 300 BLK to deliver more consistent feeding across the wide range of projectile weights and profiles. The distinct rib and unique upper texture also provide instant visual and tactile differentiation from 5.56 magazines to reduce cross-loading. With GEN M3 materials and engineering, it pairs impact- and crush-resistant polymer with proven feeding geometry for dedicated 300 BLK performance you can trust.
Made in the USA.
NSN: MAG800-BLK / 1005-01-670-6834
Features
Patented, modified internal geometry to allow for the large variance in projectile weights and shapes found in .300 BLK cartridges
Visual and tactile external changes to differentiate the magazine from other 5.56 NATO PMAGs
GEN M3 standard features
Compatible with all PMAG accessories and Tactile Lock Plates
Paint-pen dot matrix
Removable floorplate for easy maintenance
PURPOSE-BUILT MAGAZINE ONLY FOR 300 BLK
Dedicated magazine for rifles chambered in 300 BLK that supports the differing geometries found in that caliber. The result is a more reliable magazine
DESIGNED WITH VISUAL & TACTILE DIFFERENCES
Distinct rib design and smooth upper-half texture provide visual and tactile differentiation from other PMAGs to mitigate dangerous cross-loading issues
INCORPORATES THE SAME FEATURES AND PERFORMANCE OF THE GEN M3 LINE
Next-generation impact and crush-resistant polymer, aggressive front and rear texture, easily removable slim floor plate, and a paint pen dot matrix
EXPORT NOTICE: This is an item controlled for export by the Export Administration Regulations (EAR) under the Commerce Control List (CCL). These controls take the form of export regulations and license requirements. As part of the express consideration provided for receipt of Magpul's goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Magpul in violation of U.S. law is prohibited. Customers acquiring controlled goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. (See Magpul Compliance Notices page for more information).
PLEASE NOTE: Certain U.S. jurisdictions restrict firearm magazines sales. Magpul Industries cannot process sales/shipments prohibited by law. A list of states and municipalities restricting firearm magazine sales is available here.
WARNING: Observe safe firearm handling practices at all times. Failure to do so may result in serious bodily injury or death. Magpul Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product.
Technical Specifications
More Information
Collection
2026 NEW Colors
Caliber
.300 AAC Blackout
Platform
AR15, M4, M16
Capacity
30 rounds
Weight
5 oz.
Length, max
7.5 in.
Compatibility
Wide compatibility with most 'STANAG 4179' platforms such as the AR15/M4, FN SCAR, IWI Tavor, and others
MADE & ENGINEERED IN THE USA
FREE SHIPPING
on orders over $75 
100% SATISFACTION
guaranteed 
