12.5" 300 BLACKOUT MR 4140CM SBN BARREL SUB-ASSEMBLY

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CMMG 12.5" 300 BLACKOUT MR 4140CM SBN BARREL SUB-ASSEMBLY

12.5″
Multi Role Profile
4140 Chrome Moly
Salt Bath Nitride Finish inside and out
1:7 Twist
300 AAC Blackout Chamber
Threaded 5/8-24
Pistol length gas port
.750″ Gas Journal

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