Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced.
AR Barrels
CMMG BBL 300BLK 16.1″ MR 4140CM SBN
$210.00
CMMG BBL 300BLK 16.1″ MR 4140CM SBN
Availability: In stock
CMMG
| Weight | 3.5 lbs |
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| Dimensions | 20 × 2.5 × 2.5 in |
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