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CMMG Product #30D810A

Barrel Sub-Assm, 8.0" MT 4140CM SBN, 300 BLK

PRODUCT #30D810A

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$174.95
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  • ZEROED Adjustable Gas Block ZEROED Adjustable Gas Block
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Product Restrictions

Due to high demand, some of our parts and accessories may be on backorder and have an extended lead time. Items currently on backorder can still be purchased. Expected to ship in 4 to 6 weeks.

WARNING: Cancer and Reproductive Harm | https://www.p65warnings.ca.gov/

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Commonly Purchased with Barrel Sub-Assm, 8.0" MT 4140CM SBN, 300 BLK

Gas Tube Kit, Pistol/PDW
Gas Tube Kit, Pistol/PDW
Starting at $14.95
ZEROED Adjustable Gas Block
ZEROED Adjustable Gas Block
Starting at $79.95

Barrel Sub-Assm, 8.0" MT 4140CM SBN, 300 BLK

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 prodcuts come with our Lifetime Quality Guarantee.

Specifications

Caliber .300 BLK
Barrel Length 8
Barrel Twist 1:7
Barrel Contour MT
Barrel Material 4140CM
Muzzle Thread 5/8 X 24
Gas Port Location Pistol
Gas Block 0.750"
Finish SBN
Weight 1.3 lbs

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