AT4

This article is about an unguided anti-tank missile. For the Russian guided anti-tank missile, see AT-4 Spigot.

The AT4 (or AT-4) is a portable one-shot anti-tank weapon built in Sweden by Saab Bofors Dynamics (previously Bofors Anti Armour Systems). Saab have had considerable sales success with the AT4, making it one of the most common light anti-tank weapons in the world. AT4 (Eighty-Four) is the commercial name of the weapon, in Sweden it is called the Pansarskott m/86 and for instance in the United States it is known as the M136 AT4.

Contents

1 Specifications

1.1 Projectiles

1.1.1 HEAT (High Explosive Anti Tank)
1.1.2 HEDP (High Explosive Dual Purpose)
1.1.3 HP (High Penetration)

2 AT4 CS

Specifications

Length: 101.6 cm (40 in.)
Weight: 6.7 kg (14.75 pounds)
Bore diameter: 84 mm
Maximum effective range: 300 metres (984.3 feet)
Penetration: 400 mm of rolled homogeneous armour (also see below)
Time of Flight (to 250 metres): less than 1 second
Muzzle velocity: 285 metres (950 feet) per second
Operating temperature: -40 to +60° C (-40 to +140° F)
Ammunition: Fin-stabilized rocket with shaped charge warhead

Projectiles

There are several different projectiles for the AT4. Note that since the AT4 is a one-shot weapon, these projectiles are preloaded.

HEAT (High Explosive Anti Tank)

The AT4 HEAT is a low-trajectory, low-dispersion weapon that can penetrate up to 420 mm of armour.

HEDP (High Explosive Dual Purpose)

For use with bunkers and buildings. The projectile can be set to detonate on impact or with a delayed detonation.

HP (High Penetration)

Extra high penetration ability. Can penetrate 500 to 600 mm armour.

AT4 CS

The AT4 CS (Confined Space) is a variant of the AT4 specially designed for urban warfare. According to the manufacturer, "The AT4 CS is the only anti-armour weapon in the world that can be used to the full in the tight conditions of urban warfare". [link]

The regular AT4 can be extremely dangerous to fire from confined spaces due to the extreme increase in pressure. The back flame can also bounce back at the soldier if there is a wall or another solid object within 15 metres of the breech. While the CS is considerably safer than the regular AT4, there have still been reports of soldiers fainting when firing the AT4 CS from confined spaces.

The AT4 CS is used by the Swedish urban warfare units.

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