| CALIBER | 5.56X45MM |
| BARREL LENGTH | 16.1 |
| BARREL TWIST | 1:7 |
| BARREL CONTOUR | M4 |
| BARREL MATERIAL | 4140CM, SBN |
| BARREL TWIST | 1:7 |
| MUZZLE THREAD | 1/2 X 28 |
| GAS PORT LOCATION | CARBINE |
| GAS BLOCK |
0.750″
|
Barrel Sub-Assm, 16.1″ M4 4140CM SBN, 5.56mm
Perfect for building your custom AR15 upper group. Comes with a properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.
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