Perfect for building your custom Mk4 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced. Made of 4140CM with a SBN Finish.
Features :
Features :
- 1:16 Twist 4140 Chrome moly
- 1/2X28 thread pitch
- Medium taper profile
- ,Carbine length gas port .750" gas block Journal,
Specifications:
| Barrel Length | 16.1" |
| Caliber | 350 Legend |
| Type | Barrel |
| Type of Barrel | 1:16 |
| Description | Carbine |
