 In contrast, a single-action pistol can only be fired with the hammer in the cocked position; this is generally done when a loaded magazine is inserted and the slide cycled by hand.In common with the M1911, the Hi-Power is therefore typically carried with the hammer cocked, a round in the chamber and the safety catch on (a carry mode often called "cocked and locked" in the United States or "made ready" in the UK, or sometimes called "condition one").The Hi-Power, like many other Browning designs, operates on the short-recoil principle, where the barrel and slide initially recoil together until the barrel is unlocked from the slide by a cam arrangement.