M136 AT4: Look at the action of American guns heavily used in the Ukraine war

 

Video Source: U.S. MILITARY CENTRAL

The AT4 is intended to give infantry units a means to destroy or disable armoured vehicles and fortifications, although it is generally ineffective against current modern main battle tanks (MBTs), especially those with reactive armour, unless weaker sections of the tank's armour are exploited. The launcher and projectile are manufactured prepacked and issued as a single unit of ammunition, with the launcher discarded after a single use.