PMAG 20 AR/M4 GEN M3

The Magpul PMAG 20 AR/M4 GEN M3 (MAG560) is a 20-round polymer magazine for AR-15/M4 platforms chambered in 5.56×45 NATO / .223 Remington. The GEN M3 upgrades include enhanced materials, refined geometry, and improved functionality to meet professional and military performance expectations.

FEATURES:

• Next-generation impact- and crush-resistant polymer construction
• Modified internal and external geometry for greater compatibility beyond Colt-spec platforms
• Long-life USGI-spec stainless steel spring for durability
• Four-way anti-tilt, self-lubricating follower for smooth feeding
• Constant-curve internal geometry for reliable round presentation
• Redesigned bolt catch notch for improved bolt catch clearance
• Over-travel insertion stop on the spine to prevent over-insertion
• Low-profile ribs and aggressive front/rear texture for assured grip control
• Flared, easy-to-disassemble floorplate for handling and drop protection