The AT-4 is a Swedish lightweight multi-purpose weapon by Bofors. It is a single shot anti-tank rocket with iron sights guidance and a range of about 300 meters, capable of penetrating more than 400 mm of armour. The AT-4 (Spigot) is a Russian 120 mm anti-tank guided missile introduced during the 1970s and supplied to infantry, BMP-1, BMP-2 and BRDM-3 units. It has a maximum range of 2000 meters and a flight speed of 185m/s. Research AT-4