SS1 is an assault rifle with caliber 5.56 x 45 mm and 7? barrel rifling that has high accuracy and durability. Using foldable butt, it is appropriate to be used in all combat fields. SS1 can be assembled with some accessories such as silencer, telescope, bayonet, various types of grenade launchers, etc. This rifle has been developed into some variants in line with its operational field, namely standard, marinized and rider types, not only for long barrel. Marinized type is specially designed for marine and swamp condition, whereas raider type is designed for special combat field.