This is our complete custom rifle. We begin with a Stiller TAC 300 receiver as a foundation. It is then has a Hart stainless #5 Douglas Contour Barrel installed. The barreled action is installed in a MDT HS3 Chassis that accepts AICS magazines. A Timney Trigger is installed and tuned to 2 1/2 lbs.Once everything is assembled the rifle is shot and tested with our accuracy guarantee of 1/2 MOA groups. If it don't shoot with factory or hand loaded ammunition it won't ship.