This addition to the Caldwell Magnum Series Target line is constructed with premium AR-550 steel for uncompromising durability. AR-550 is simply the finest target steel available on the market. It comes complete with free standing frame, popper shape target (14-Inch tall by 4-Inch wide) and ground stakes. The base of the frame sits approximately 7-Inch off the ground. When the target is struck with a bullet it falls backward and is automatically reset with the integrated reset spring. It is designed to be shot at a minimum distance of 100 yards, for maximum life expectancy IMPACT velocities of 3,000 fps or below and IMPACT energies of 3,100 ft lbs or less are recommended.