Description
Barrel Sub Assembly
Perfect for building your custom AR15 upper group – Comes with properly installed M4 barrel extension – All barrel sub-assemblies are properly headspaced
Description:
- Caliber 5.56x45mm
- Barrel Length 16.1
- Barrel Twist 1:7
- Barrel Contour MT
- Barrel Twist 1:7
- Muzzle Thread 1/2 X 28
- Gas Port Location Mid
- Gas Block 0.750
- Weight 1.56 lbs
