The next-generation PMAG 40 AR/M4 GEN M3 is a 40-round polymer magazine for AR15/M4 compatible weapons chambered in 5.56×45 NATO / .223 Remington. Along with expanded feature set and compatibility, the GEN M3 incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability that exceed rigorous military performance specifications.

• Next-generation impact and crush-resistant polymer construction
• 40-round reliability with no stoppages
• The anti-tilt, self-lubricating follower ensures a smooth feed and magazine reliability
• Constant-curve internal geometry, over-travel insertion stop on the spine, and a long-life stainless steel spring ensure smooth feeding
• Improved flared floorplate aids magazine handling and disassembly and is slim enough for use with many double and triple pouches
• Paint pen dot matrix to easily identify your different loads when it’s crunch time
• Modified dimensions allow for wider compatibility with non Colt-spec ‘STANAG 4179’ platforms