Magpul PMAG 20 AR/M4 Gen M3 Black 5.56 NATO

Magpul PMAG 20 AR/M4 Gen M3: The Modern Standard

The PMAG 20 Gen M3 represents the evolution of one of the most trusted magazine designs in modern shooting sports. This 20-round polymer magazine is purpose-built for AR-15 and M4 compatible rifles, incorporating lessons learned from decades of field use and military service.

Enhanced Design and Durability

Magpul engineered the Gen M3 with new material technology and advanced manufacturing processes that exceed rigorous military performance specifications. The result is a magazine that delivers:

• Improved strength and durability through enhanced polymer formulation
• Reliable feeding via constant-curve internal geometry and a four-way anti-tilt follower
• Long-life USGI-spec stainless steel spring for commonality with standard magazines
• Increased bolt catch clearance with a redesigned notch that prevents binding
• Over-travel stop on the spine to prevent over-insertion on compatible weapons

Practical Features for Real-World Use

The Gen M3 is designed for shooters who demand functionality without compromise:

• Low-profile ribs with aggressive front and rear texturing provide positive control in all conditions
• Easy tool-less disassembly allows quick cleaning and maintenance in the field
• Paint pen dot matrix on the bottom panel enables simple identification marking
• Flared floorplate aids extraction and handling while improving drop protection
• Slimmer profile ensures compatibility with double and triple magazine pouches

Broad Platform Compatibility

While optimized for Colt-spec AR-15 and M4 platforms, the Gen M3's modified geometry also functions reliably with HK 416/MR556A1/M27 IAR, British SA-80, FN SCAR MK 16/16S, and other modern rifle platforms.

Made in the USA

Magpul's commitment to quality extends to domestic manufacturing, ensuring consistent performance and supporting American industry.