CMMG AR-15/MK4 MAGAZINE - BLACK 22LR 25/RD 041D0032 CMM. It features a 25-round capacity and is compatible with .22LR conversion kits and CMMG Mk4/mil-spec AR15 lower receivers. Specifications for CMMG Mk4/AR-15 .22 LR 25 Round Rifle Magazine: Manufacturer: CMMG Magazine Capacity: 25 Round Caliber: .22 Long Rifle Condition: New Features of CMMG Mk4/AR-15 .22 LR 25 Round Rifle Magazine: 25-Round Capacity Compatible With .22LR Conversion Kits Compatible With CMMG Mk4/mil-spec AR15 Lower Receivers Package Contents: CMMG Mk4/AR-15 .22 LR 25 Round Rifle Magazine CMMG's new 22LR 25rd magazine combines the proven functionality of our original 22ARC magazines with all new exterior styling to match the looks of our lineup of firearms and other conversion magazines. It features a 25-round capacity and is compatible with .22LR conversion kits and CMMG Mk4/mil-spec AR15 lower receivers. CMM22AFC2B