Hart #4.5 contour, straight fluted, matte stainless barrel takeoff. It's chambered in 7mm Rem Mag and has had less than 100 rounds down the tube. The action previously threaded to is a Borden Timberline which has a 1 1/16" x 18 TPI threading. The barrel will also come with the seamless Vais Radial Brake and measures 26.5" in length with the brake attached. $300 shipped. Thanks!