The 11.5″ Luth-AR barrel is a Government profile" 4150 Chrome Molly Vanadium 5.56 mm" button broached barrel. The barrel is threaded with a 1/2x28 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.
Features :
Features :
- 4150 Chrome moly vanadium
- 1/2X28 Thread pitch
- 1/9 RH twist
- Government profile
- Button broached