How come rocket launchers/rpg’s can only be fired once?

Question

I saw video about rocket launchers like javelins and rpgs that said they can only be fired once, why so?

In: Technology

Answer 1

It depends on the model of RPG. Some are designed to be single use only, like the 66mm rocket, and others are designed to be multi-use like the RPG7V and the Carl Gustarv 84mm.

With the multi they are required to reload because you can only have a single rocket within the shoulder launcher because of weight and fire control issues