Rock River Arms X-1 rifle comes out of the box without any changes needed to be made. This rifle has a custom Operator Carbine Stock, Hogue grip, two stage trigger, winter trigger guard, low profile gas block, 18 inch fluted barrel, Hunter muzzle brake, free float rail, an 1 MOA accuracy. This tactical long range rifle comes in a Rock River Arms Case with one magazine. Its is optic ready for the shooters choice.