22 LR upper receiver has a 17-inch barrel and features CMMG's Stainless .22 LR Bolt Group and designated .22 LR barrel. The receiver and handguard are hard ...
cmmg-22lr-upper
Jun 19, 2014 — MGP used some of the CMMG parts, but machined the barrel so that I would not need the brass extension bushing. Therefore this is a dedicated .... CMMG, Inc 22LR Mk4 Upper Receiver Groups 22B7C51 Color: Black, Finish: Anodized, Caliber: .22 Long Rifle, $9.96 Off w/ Free Shipping · Product Info. 3925e8d270
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