Trigger blocking system for a firearm

A firearm, comprising:

• a lower receiver and a grip assembly that includes a firing mechanism and a trigger guard, the firing mechanism including a hammer moveable between a cocked and uncocked position, a sear assembly coupled to the hammer, and a trigger coupled to the sear assembly with the trigger positioned in the trigger guard, wherein the trigger guard includes a removable guard portion along a lower side of the trigger;
• and
• a trigger blocking device coupled to the removable guard portion of the trigger guard, wherein the trigger blocking device is movable along the removable guard position and includes a blocking position in which a leading end nose of the trigger blocking device is in contact with a bottom end of the trigger housed in the trigger guard for blocking rearward movement of the trigger and an unblocked position allowing rearward movement of the trigger in the trigger guard, wherein the trigger blocking device further includes an elongated blocking portion extending from the leading end nose along the removable guard portion and an extension portion extending rearwardly from the blocking portion into a grip of a firearm, the extension portion being engaged with an actuating device that is configured to secure the trigger blocking device in the blocking position and to allow the trigger blocking device to reciprocate along the removable guard portion in the unblocked position.