CMMG Mag 22LR 10Rd Gray AR Rifles This is a CMMG AR15 .22 LR magazine and it is designed to work with CMMG conversion kits and similar Atchisson-type .22 LR conversion systems. It features a 10 Round capacity, Grey Polymer Construction, with six hex-head screws for complete disassembly. It is the same size as a curved USGI style 30 round magazine as a result feeds very reliably.Specifications and Features:CMMG Inc. 22AFC1D10 Round Capacity magazine.22 Long RifleAtchisson-type Conversion SystemsBlack Polymer FinishFits:ATI KitsChiappa KitsCMMG KitsCeiner KitsSpike's Tactical KitsStag Arms KitsSIG R522 & P522Target Sports KitsTactical Industries KitsTactical Solution KitsNote: Does not function with Bolt Hold Open adapter