CMMG BBL 300BLK 16.1" MR 4140CM SBN
CMMGSKU BSS115301
Description
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced.
Features
- 1:7 Twist 4140 Chrome moly
- 5/8X24 thread pitch
- Multi Role profile
- Carbine length gas port .750" gas block Journal, 300 Blackout chamber
Specs
- SKU
- BSS115301
- MPN
- 30DF80A
- UPC
- 815835011028
- Weight
- 36 oz