The polymer frame makes them lighter than typical steel or aluminum-framed handguns, which is attractive for police officers and civilians who carry firearms for extended periods of time. Glock pistols do not have any external controls such as levers, decockers, or manual safeties (stock). This adds to the simplicity of use and removes a potential source of errors when operating the handgun under stress. Most of the steel components in a Glock pistol are treated with a nitriding process called "Tenifer"[9], which increases the surface hardness and makes the weapon resistant to corrosion and wear.
