CMMG Black MK4 / AR15 22 Long Rifle Rifle Magazine - 25 Rounds - The new CMMG 25-round .22LR magazine combines the proven reliability and performance of CMMG's original 22ARC magazines with an all-new exterior design that complements the styling of their current firearm lineup and conversion magazines. Designed for dependable operation, it features a 25-round capacity and is compatible with CMMG .22LR conversion kits as well as CMMG Mk4 and mil-spec AR-15 lower receivers. Compatible with MK4; AR15;