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SKU: CA55DC70A

CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm

Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.

16.1?
Medium Taper Profile
4140 Chrome Moly
Salt Bath Nitride Finish inside and out
1:7 Twist
5.56×45 NATO Chamber
Threaded 1/2-28
Midlength gas port
.750? Gas Journal

$184.00

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