this barrel uses a barrel nut for quick install. It is chambered in .260 Remington and it has about 50-100 rounds through it. It was not difficult to get 1/2 MOA groups. 24” stainless steel, medium Palma contour with threaded muzzle 5/8x24 made by X Caliber. Medium Palma is a middle weight barrel. It can fit into most stocks because it’s a remage style. I want $300 shipped. Price drop to $265.