4150 Chrome Molly Vanadium 5.56 mm, button broached barrel. The barrel is threaded with a 1/2×28 thread pitch, a 1-9 RH twist rate with 6 lands and grooves and an M4 feed ramp. This barrel takes a .750 gas block.
The 11.5″ Lightweight Barrel 1-9 CM 4150 – 5.56 mm — Government profile
- Available in 11.5″
- 5.56 mm
- 4150 Chrome Molly Vanadium
- Threaded Barrel — Thread Pitch 1/2 x 28
- Gas Block Diameter .750
- Gas Tube Length — Carbine
- 1-9 RH Barrel Twist
- 6 Lands and Groves
- M4 Feed Ramp
- Government profile
- Button Broached
- Weight 1 lb 6 oz
