cracked chamber adapter November 4, 2018 Reviewer: Phillip Short from golden, CO United States cracked chamber adapter in less then 500 rds. CMMG replaced it in less then 1 week so very happy with CMMG. if you get one with the brass chamber bushing it's old stock CMMG has changed the chamber adapter to no brass bushing all SS. NOT happy that I got old stock but at least CMMG stands behind what they make.



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