The 9K111 Fagot (Russian: Фагот; “bassoon”) is a second-generation tube-launched SACLOS wire-guided anti-tank missile system of the Soviet Union for use from ground or vehicle mounts. The 9K111 Fagot missile system was developed by the Tula KBP Design Bureau for Instrument Building.
The missile is stored and carried in a container/launch tube. It is fired from a 9P135 launcher post, a simple tripod. A 9S451 guidance box is fitted to the tripod with the missile sitting just above. The 9Sh119 sight is fitted to the left side (from the gunner’s POV). The complete launcher system weighs 22.5 kg (50 lb). The gunner lays prone while firing. The system can engage moving targets travelling at less than 60 km/h (37 mph). The launcher post can traverse through 360 degrees horizontally, and +/− 20 degrees in elevation. The sight has a magnification of 10x and a 5 degree field of view. Up to three missiles a minute can be fired from a launcher post.
“9M111” is the GRAU designation of the missile. Its NATO reporting name is AT-4 Spigot.
The technical characteristics may have minor differences according to the different manufacturers of the given product. The manufacturers reserve the right to make changes to the specified parameters.
Mass: 12.5 kg (28 lb) (Missile weight) or 22.5 kg (50 lb) (9P135 launching post)
Length: 1,100 mm (3 ft 7 in)
Diameter: 120 mm (4.7 in)
Action: 400 mm versus RHA or 200 mm towards armour inclined at 60°
Rate of fire: 3 rds / min
Muzzle velocity: 80 m/s (180 mph; 290 km/h) at launch or 186 m/s (420 mph; 670 km/h) in flight speed
Effective firing range: 70–2,500 m (230–8,200 ft)
Warhead: High Explosive Anti-Tank (HEAT) warhead
Warhead weight: 1.7 kg (3.7 lb)
Guidance system: SACLOS wire-guided missile
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