Ordnance Factories Board · Assault-Rifle · Discontinued · 2001
| Weight (empty) | 3600 g (127.0 oz) |
| Overall Length | 960 mm (37.80") |
| Barrel Length | 464 mm (18.27") |
| Magazine Capacity | 20 rounds |
| Action Type | Gas Operated Long Stroke Piston |
| Firing Mechanism | Hammer Fired |
| Muzzle Velocity | 900 m/s (2953 fps) |
| Muzzle Energy | 1620 J (1195 ft·lbf) |
| Effective Range | 400 m (437 yd) |
| Frame Material | Steel |
Primary Caliber: 5.56x45mm NATO
The INSAS 1B1 (Indian Small Arms System) is an improved variant of India's first indigenously designed assault rifle, introduced in 2001 to address reliability issues identified during the 1999 Kargil War. Developed by the Armament Research and Development Establishment (ARDE) in Pune and manufactured by the Ordnance Factories Board at facilities in Tiruchirappalli, Kanpur, and Ishapore, the 1B1 represents a significant milestone in India's defense self-reliance efforts. Chambered in 5.56×45mm N...
Country of Origin: IN
Designer: Armament Research and Development Establishment (ARDE)