See MAG233

The next-generation PMAG 40 GEN M3 is a 40-round (limited to 5) 5.56x45 NATO (.223 Remington) polymer magazine for AR-15-pattern magwell firearms. Along with expanded feature set and compatibility, the GEN M3 incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications.

Modified internal and external geometry also permits operation with a wide range of non Colt-spec platforms such as the HK 416 and MR556A1, M27 IAR, British SA-80, FN SCAR MK 16/16S, and others. A redesigned bolt catch notch in the rear of the magazine provides increased bolt catch clearance, while an over-travel stop on the spine helps ensure the magazine will not over-insert on compatible AR's.

- pinned to 5 rounds