Pre-fit for a Terminus Apollo in 6.5 Creedmoor - a recessed crown will be added at your chosen length with can be as long as 26". Muzzle threading will add $100 - barrel would need to be cut to 20" for a 5/8-24 muzzle thread.6.5mm 8 twist SS #3 27"5R rifling.670 at 26" continued taper