9K111

The 9K111 Fagot is a Soviet SACLOS wire-guided anti-tank missile system. Its NATO reporting name is AT-4 Spigot. Developed in the late 1960s, it entered service with the Soviet Army in 1970. The system consists of a tripod-mounted launcher and a 9M111 missile, which is launched from a sealed transport-launch tube. The missile is guided by a semi-automatic command to line-of-sight (SACLOS) system, meaning the operator tracks the target and the missile follows commands sent via thin wires that trail behind it.

The Fagot system is designed for use by infantry, reconnaissance units, and airborne troops, providing them with a portable anti-tank capability. It can be fired from various positions, including from within buildings or trenches, offering tactical flexibility. The missile has a tandem HEAT warhead, designed to defeat explosive reactive armor (ERA) commonly found on modern tanks. Its effective range is typically around 2.5 kilometers, making it suitable for engaging targets at medium distances.

The 9K111 missile is a relatively simple and robust system, contributing to its widespread adoption. It has been exported to numerous countries and has seen combat in various conflicts around the world. While newer generations of anti-tank guided missiles have since been developed, the Fagot system remains in service with many nations due to its cost-effectiveness and proven reliability. It represents a significant development in man-portable anti-tank weapon systems from the Soviet era.