Barrel Sub-Assm, 12.5″ MR 4140CM SBN, 300 BLK

$179.95

Category:

Description

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

**All NFA rules apply** See linked CMMG Resource article for more information.

All CMMG products come with our Lifetime Quality Guarantee.

TECHNICAL SPECIFICATIONS

 
CALIBER .300 BLK
BARREL LENGTH 12.5
BARREL TWIST 1:7
BARREL CONTOUR MULTI ROLE
BARREL MATERIAL 4140CM
BARREL TWIST 1:7
MUZZLE THREAD 5/8 X 24
GAS PORT LOCATION PISTOL
GAS BLOCK 0.750″
FINISH SBN

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