View source for 9K111 Fagot

{{lead too short|date=June 2010}}
{{Infobox Weapon
|name= 9K111 Fagot
|image= [[File:9M111 AT-4 Spigot.jpg|300px]]
|caption= AT-4 Spigot anti-armor team
|origin={{URS}}
|type= [[Anti-tank weapon]]
<!-- Type selection -->
|is_ranged=yes
|is_explosive=yes
|is_missile=yes
<!-- Service history -->
|service= 
|used_by= [[9K111 Fagot#Users|See Users]]
|wars= 
<!-- Production history -->
|designer= 
|design_date=1962
|manufacturer= 
|unit_cost=
|production_date=1970
|number= 
|variants= [[9K111 Fagot#Models|See Models]]
<!-- General specifications -->
|weight= {{convert|11.5|kg|abbr=on}}
|length= {{convert|1030|mm|ftin|abbr=on}}
|part_length= {{convert|875|mm|ftin|0|abbr=on}} without gas generator
|width=
|height=
|crew=
<!-- Ranged weapon specifications --> 
|cartridge= 
|caliber= 
|action= 
|rate= 
|velocity= {{convert|80|m/s|mph km/h|abbr=on}} at launch<br>{{convert|186|m/s|mph km/h|abbr=on}} in flight
|range= {{convert|70|-|2500|m|abbr=on}}
|max_effective_range= 
|feed= 
|guidance=[[Wire-guided missile|SACLOS]]
|sights= 
<!-- Explosive specifications --> 
|diameter= {{convert|120|mm|abbr=on}}
|filling=
|filling_weight=
|detonation=
|yield=
}}
The '''9K111 ''Fagot''''' ({{lang-ru|9K111 «Фагот»}}; {{lang-en|[[bassoon]]}}) is a [[SACLOS]] [[Wire-guided missile|wire-guided]] [[anti-tank missile]] ''system'' of the [[Soviet Union]]. "9M111" is the [[GRAU]] designation of the ''missile''. Its [[NATO reporting name]] is '''AT-4''' '''''Spigot'''''.

==Development==
The 9K111 Fagot was developed by the Tula Machinery Design Bureau (Tula KBP). Development began in 1962 with the aim of producing the next generation of [[SACLOS]] ATGM's, for use in both the man portable role and the tank destroyer role. The 9K111 Fagot was developed alongside the [[AT-5 Spandrel|AT-5]]; both missiles use similar technology – only differing in size.

The missile entered service in 1970.

==History==
The anti-tank platoon of a [[Soviet]] BTR equipped motor rifle [[battalion]] had two [[ATGM]] squads, each squad has two 9K111 Fagot teams. The team consisted of 3 men - the gunner carries the '''9P135''' launcher and tripod as a back pack - the other two men carry two launch tubes each. The men also carry assault rifles, but do not carry an [[rocket propelled grenade|RPG]] - because unlike the earlier missiles there is only a small deadzone inside which the missile cannot engage the target. In addition to the four missiles the team carries, they normally have a [[BTR-60|BTR]] with an additional 8 missiles.

It can also be deployed from the [[BMP-1P]], BTR-D and [[UAZ-469]].

==Description==
[[Image:POLK 9K111 Fagot.jpg|thumb|9K113 Konkurs missile system (launcher and missile) and a 9M111M Faktoriya missile in launch tube (standing)]]
 
The missile is stored and carried in a container/launch tube. It is fired from the '''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 gunners POV). The complete launcher system weighs 22.5&nbsp;kg. The gunner lays prone while firing. The system can engage moving targets providing they are travelling at less than 60&nbsp;km/h. 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 3 missiles a minute can be fired from a launcher post.

The system uses a gas generator to push the missile out of the launch tube - the gas also exits from the rear of the launch tube in a similar manner to a [[recoilless rifle]]. The missile leaves the launch tube at 80 m/s. It is quickly accelerated to 186 m/s by its solid fuel motor. This initial high speed reduces the deadzone of the missile, since it can be launched directly at the target, rather than in an upward arc. 

The launcher tracks the position of an incandescent [[infrared]] bulb on the back of the missile relative to the target - and transmits appropriate commands to the missile via a thin wire that trails behind the missile. The [[SACLOS]] guidance system has many benefits over [[MCLOS]], with the accuracy of the system stated as 90% in some sources, though its performance is probably comparable to the [[BGM-71|TOW]] or the later [[SACLOS]] versions of the AT-3 Sagger.

==Models==
[[File:ATGM Fagot.jpg|thumb|right|Fagot being launched]]
===Missile===
* '''9M111''' ''Fagot'' (NATO: '''AT-4''' ''Spigot'' and '''AT-4A''' ''Spigot A'')  Entered service in 1970
* '''9M111-2''' ''Fagot'' (NATO: '''AT-4B''' ''Spigot B'')  Improved motor, longer guidance wire. Maximum range 2500 m.  Improved warhead 460&nbsp;mm versus [[Rolled homogeneous armour|RHA]]
* '''9M111M''' ''Faktoriya'' (Trading post) (NATO: '''AT-4C''' ''Spigot C'')  Tandem [[HEAT]] warhead for improved capability (600&nbsp;mm) against [[Reactive armour|ERA]].

===Launcher===
* '''9P135''' 22.5&nbsp;kg. Can only fire the '''9M111''' ''Fagot'' series.
* '''9P135M''' Can fire the '''AT-4''' '''9M111''' ''Fagot'' series or the [[AT-5 Spandrel]] 9M113 Konkurs series.
* '''9P135M1''' Updated version of the 9P135.
* '''9P135M2''' Updated version of the 9P135.
* '''9P135M3''' Deployed in the early 1990s. Adds 13&nbsp;kg TPVP [[thermal imaging]] night sight - range 2500 m at night.
* '''9S451M2''' A launcher with a night sight featuring an anti-dazzle system has been developed.

==Users==
{{columns-list|3|
;{{AFG}}: 100
;{{ALG}}: 100
;{{ANG}}: 100
;{{BIH}}: 52
;{{BLR}}: 500
;{{BUL}}: 222
;{{CRO}}: 119
;{{CUB}}: 100
;{{TCH}}
;{{CZE}}: 50
;{{GDR}}
;{{ETH}}: 50
;{{FIN}}: Several hundreds 9P135M-1 launchers (withdrawn from service) and AT-4B as well as AT-5A missiles, known as ''PstOhj 82'' and ''PstOhj 82M'' respectively.
;{{GEO}}
;{{GRE}}: 262
;{{HUN}}: 50
;{{flagicon image|Flag of Hezbollah.svg}} [[Hezbollah]]
;{{IND}} : 100
;{{IRN}}
;{{IRQ}}
;{{KAZ}}
;{{KUW}}: 100
;{{LBY}}: 100
;{{LTU}}
;{{MDA}}: use on bmd-1
;{{MOZ}}: 10
;{{PRK}}
;{{POL}}: 100
;{{RUS}}: 1,000
;{{SRB}}: 250
;{{SVK}}: 50
;{{SLO}}: 10  (withdrawn from service)
;{{SYR}}: 100
;{{UKR}}: 800
;{{YEM}}: 100
}}

==References==
* Hull, A.W. , Markov, D.R. , Zaloga, S.J. (1999). ''Soviet/Russian Armor and Artillery Design Practices 1945 to Present''. Darlington Productions. ISBN 1-892848-01-5.

==External links==
{{Commonscat-inline|9K111 Fagot}}
* [http://www.fas.org/man/dod-101/sys/land/row/at4spigot.htm FAS]
* [http://btvt.narod.ru/4/fagot.htm] ''in Russian''

{{Russian and Soviet missiles|ATM}}

[[Category:Cold War anti-tank missiles]]
[[Category:Cold War missiles of the Soviet Union]]
[[Category:Modern anti-tank missiles]]

[[Category:2Fix]]