A resetting magazine cut-off control system for a firearm includes a magazine and a control cuff that has a cuff cam surface and a cuff stop surface and is operable between a first position and a second position relative to the magazine. The system also includes an action member having a first portion and a second portion, with the second portion having an action stop surface. Contact between the cuff stop surface and the action stop surface prevents longitudinal movement of the action member when the control cuff is in the first position, and the first portion applies a force to the cuff cam surface, with the force moving the control cuff from the first to the second position, when the action stop surface is moved away from the cuff stop surface. The system allows a shooter to automatically switch between shooting modes by using the firearm's action.