4150 Chrome Molly Vanadium 5.56 mm, button broached barrel. The barrel is threaded with a 1/2x28 thread pitch, a 1-7 RH twist rate with 6 lands and grooves and an M4 feed ramp. This barrel takes a .750 gas block.
- Twist:
- 1:7 RH
- Barrel Type:
- Carbine Length
- FireArm:
- No
- Requires FFL:
- False
