A reciprocating charging handle on a rifle is a mechanism designed to facilitate the manual operation of the firearm during the loading and unloading process. It is typically found on semi-automatic and automatic rifles and aids the shooter in quickly cycling the firearm.

By pulling it, the shooter can pull the bolt or bolt carrier group to the rear, ejecting an empty cartridge case and chambering a new round from the magazine. This action allows the shooter to prepare for the next shot without taking the rifle off their shoulder or losing sight of the target. The primary advantage of this design is that it enhances the shooter’s rate of fire and overall efficiency.