Magpul PMAG GEN M3 25rd 308 Win/7.62x51 NATO AR-10 Magazine Black

The Magpul PMAG GEN M3 delivers reliable feeding and enhanced durability for AR-10 and SR25 platform rifles chambered in 308 Winchester and 7.62x51mm NATO. This 25-round magazine addresses common feeding issues found in legacy 308 magazines through improved geometry and material engineering. The GEN M3 design incorporates lessons learned from millions of rounds fired through previous PMAG generations.

What Makes This Different

Unlike traditional steel magazines that can dent and cause feeding malfunctions, the PMAG GEN M3 uses impact-resistant polymer construction with over-insertion stops and anti-tilt followers. The magazine body features constant-curve geometry optimized specifically for 308/7.62x51 cartridges, eliminating the feeding bind common in converted 5.56 magazine designs. Magpul rates these magazines for over 10,000 loading cycles without spring degradation.

Key Features

• 25-round capacity for extended range sessions and tactical applications
• Self-lubricating polymer construction resists corrosion and impact damage
• Anti-tilt follower with constant force spring ensures reliable feeding
• Over-insertion stop prevents magazine damage during aggressive reloads
• Compatible with AR-10, SR25, and DPMS pattern rifles in 308/7.62x51
• Textured grip surfaces and flared floorplate for positive handling
• Paint pen dot matrix for easy identification and marking

Field testing demonstrates consistent feeding across temperature ranges from -30°F to 180°F. The magazine maintains dimensional stability in harsh environments where metal magazines may expand or contract. Competition shooters report faster reload times due to the optimized grip texture and floorplate design. The polymer construction reduces overall rifle weight by 3.2 ounces compared to steel alternatives.

Technical Specs

• Capacity: 25 rounds 308 Winchester/7.62x51mm NATO
• Material: Impact-resistant polymer construction
• Compatibility: AR-10, SR25, DPMS Gen I pattern rifles
• Length: 7.75 inches overall
• Width: 1.18 inches at widest point
• Weight: 5.1 ounces unloaded
• Color: Black polymer finish
• Country of Origin: Made in USA

The PMAG GEN M3 represents the current standard for AR-10 magazines among military and law enforcement agencies. Its proven track record in demanding applications makes it the logical choice for serious shooters who cannot accept feeding failures. Stock levels fluctuate due to consistent demand from both civilian and professional markets.