recoil

weapon

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The Information Architects of Encyclopaedia Britannica

Last updated

July 13, 2026

Quick Summary

Recoil refers to the backward movement of a weapon when it is fired, often described as a "kickback". This force is a reaction to the forward propulsion of a projectile. Historically, guns were allowed to recoil freely, and soldiers would manually return them to firing position.12

Innovations in recoil control aimed to mitigate this backward force, making weapons easier to handle and more accurate. Early methods involved using sloped platforms and friction to absorb recoil. Later developments included hydraulic buffers and compressed air or nitrogen systems, often called hydropneumatic systems, which became standard for returning guns to their firing position.2

Recoilless guns represent a different approach, designed to eliminate recoil altogether. These weapons achieve this by expelling gas or a counter-projectile backward at the same momentum as the forward projectile, effectively canceling out the recoil.3

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