The P220 features a stainless steel slide machined from barstock and coated with a durable, wear-resistant Nitron finish, light-weight alloy frame with integral accessory rail, and the SIG SAUER four-point safety system of decocking lever, patented automatic firing pin safety block, safety intercept notch, and trigger bar disconnector. This firearm is equipped with a manual safety. A manual safety when engaged is designed to mechanically prevent the firearm from discharging when the trigger is pressed, either intentionally or unintentionally.