Missile M-136 AT4

Development of the weapon began in 1976 as a replacement for the Pansarskott m/68. The design focused on an individual anti-armor system intended to engage medium-to-light armored vehicles, fortifications, and the sides or rear of main battle tanks. Following a 1982 competition to replace the FGR-17 Viper, the system was modified with bumpers and improved sights for adoption by the United States military as the M136.

The M136 is an unguided, man-portable, disposable recoilless gun. It utilizes a smooth-bore fiberglass outer tube designed for a single firing. The system operates by balancing the forward inertia of the projectile with propellant gases ejected through the rear of the barrel. Standard variants produce a back blast area behind the weapon, while the Confined Space (CS) version utilizes a saltwater countermass to absorb the pressure wave, allowing for operation within enclosed structures. The weapon is issued as a preloaded unit of ammunition. Available projectiles include High-Explosive Anti-Tank (HEAT) for armor penetration and High-Explosive Dual Purpose (HEDP) for use against bunkers, buildings, and light armor. Specialized variants include High Penetration (HP), Anti-Structure Tandem-warheads (AST) for urban breaching, and High Explosive (HE) anti-personnel rounds capable of air-burst detonation. The M136A1 variant incorporates a bi-metal warhead and reduced sensitivity explosives. The system features integral iron sights and can be fitted with various night vision units.

The system is widely deployed globally and serves as a primary light anti-armor weapon for numerous nations. Primary operators include the United States, Sweden, France, and Canada. It has been exported to several countries in South America, Europe, and Asia. The weapon has seen combat in the United States invasion of Panama, the Persian Gulf War, the War in Afghanistan, and the Iraq War. Large quantities were supplied to Ukraine in 2022 by multiple nations for use during the Russian invasion. The weapon has been utilized in various regional conflicts, including the Syrian Civil War and the Kurdish–Turkish conflict. In 2009, units originally sold to Venezuela were reportedly captured from FARC insurgents in Colombia. The system has also been documented in use by non-state actors following capture from state forces.