ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,621, issued on Oct. 20, was assigned to Mantis Tech LLC (Oswego, Ill.).

"Firearm training apparatuses, systems and methods of using" was invented by Austin Allgaier (Oswego, Ill.) and Ammon Allgaier (Oswego, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A firearm training system for retrofitting an existing rifle to allow for repeated dry firing of the rifle without having to manually reset the trigger after each shot. In some embodiments the system includes a bolt carrier group trigger resetter and a magazine battery pack. In some embodiments, the magazine battery pack is rechargeable. In some embodiments, the bolt carrier group trigger reset...