Semi-automatic firearm rapid-fire accessory

A method of mounting a rapid-fire accessory on a trigger guard of a semi-automatic firearm, comprising:

• mounting a magazine well bracket around a magazine well of the semi-automatic firearm;
• and
• mounting a forend rail mount of the rapid-fire accessory onto an accessory rail of the of the semi-automatic firearm, wherein the accessory rail extends along a forend of the semi-automatic firearm, wherein once the forend rail mount is mounted on the accessory rail, the accessory rail is disposed in a mounting channel of the forend rail mount, wherein the mounting channel guides a sliding movement of the forend rail mount forward and rearward relative to the forend, wherein the rapid-fire accessory includes a trigger actuator for engaging a trigger of the semi-automatic firearm, wherein the trigger actuator is fixed relative to the forend rail mount and configured to pull the trigger when the forend slides forward in the mounting channel, wherein the mounted magazine well bracket is disposed between the magazine well and a support structure of the trigger actuator;
• wherein the support structure of the trigger actuator extends rearward from a distal end closest to the forend rail mount to a proximal end closest to the trigger, wherein the trigger actuator further includes a trigger bar supported by the support structure of the trigger actuator and extending laterally across the trigger from one side of the semi-automatic firearm to an opposed side of the semi-automatic firearm.