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