The SS1 (short for Indonesian: Senapan Serbu 1, "Assault Rifle 1") is the standard assault rifle of the Indonesian armed forces. It is based on the FN FNC rifle but modified in order to meet ergonomic and tropical environment needs.
The assault rifles are gas-operated automatic carbines with a foldable butt and are designed to meet the NATO standard. SS1 weapons are high performance light individual weapons that have been used by the Indonesian armed forces, including the Army, Navy, and Air Force, as well as police. It was adopted into Indonesian service in 1991.
It is currently being phased out and replaced by the Pindad SS2. The SS1 would possibly be used by reserve or paramilitary forces when the SS2 is fully adopted into service.
The SS1 is manufactured by PT Pindad, Bandung, Indonesia under the license from Fabrique Nationale, Belgium.