SAR 21 (Singapore Assault Rifle 21st century) — bullpup service rifle of the Singapore Armed Forces. Integrated 1.5x optical sight, laser aiming device, built-in scope mount. Fully ambidextrous; designed specifically for Singapore's tropical operating environment. Only non-Israeli Asian bullpup in widespread military service. Type: Rifle Action: Gas-Operated Caliber: 5.56x45mm NATO Capacity: 10 Year introduced: 1999, Singapore Weight: 104 oz Overall length: 43.5" Status: Active Military use: Yes Intended use: military