Armbrust (German: Crossbow) is a lightweight unguided anti-tank weapon designed and developed by Messerschmitt-Bölkow-Blohm of Germany, who later sold its manufacturing rights to Chartered Industries of Singapore (the predecessor of ST Kinetics).The propellant charge is placed between two pistons with the projectile in front of one and a mass of shredded plastic in the rear.The plastic disperses on leaving the back of the barrel, and is quickly stopped by air resistance.The pistons jam at either end of the barrel, locking the hot gases inside.[3][4] Cuban troops in Angola captured several Armbrust launchers from UNITA during the late 1980s.