The Guardian 380 fits comfortably in your pocket. It has a capacity of 6+1, is double action and built of 17-4 pH stainless steel. The combination of small size, high quality and great stopping power have made it North American Arms' most popular Guardian. The ILS (Integral Locking System) safety system allows the hammer to be locked into place so the gun can't be fired until unlocked by the key, releasing the hammer and enabling the firing pin. When unlocked, the button is flush with the black plastic grip with the hole in it (required for the key and ILS button).