Which weapon has no recoil during firing?

The RPG-7 is designed as a rocket-propelled grenade launcher, which operates fundamentally differently from traditional firearms. When an RPG-7 is fired, the projectile, or rocket, is propelled out of the tube by a rocket motor after a brief moment of ignition. This design allows for the propulsion of the projectile with minimal backward motion, since the rocket motor generates thrust opposite to the direction the round is fired.

As a result, the armor-piercing or explosive projectiles are launched without significant recoil that typically occurs with firearms that use gunpowder and operate based on the force of explosive gases escaping the barrel. In comparison, both the AK-47 and AK-74 are conventional rifles that utilize gas-operated mechanisms to cycle the action and are both subject to recoil upon firing due to the rapid expansion of gases from the burning gunpowder.

This distinction makes the RPG-7 unique in its firing mechanism, as it effectively mitigates the recoil that would normally be felt in a weapon utilizing traditional ammunition. The significance of understanding this is essential for operators and users of such weapon systems, as it impacts control and accuracy during engagement.