Sep 9, 2025

US12410980 - Drop-in system to enhance the resetting and operations of semiautomatic firearms

A drop-in system for a semiautomatic firearm trigger includes a trigger-locking block, a hump block, a trigger-locking block transfer bar and an axis retainer plate that operate together to enhance the operations of a semiautomatic firearm trigger. The trigger-locking block is pivoted on a firearm safety pin to lock the trigger when the carrier bolt travels rearward, the hump block is pivotally disposed within a trigger cradle on a trigger pin to receive a force of a hammer to rotate rearward to rotate the trigger assembly backward, the trigger-locking block transfer bar slides along carrier bolt guide and rotate the trigger-locking block forward to releasee the trigger, and the axis retainer plate holds the trigger-locking block rotatably in place and limits the rotation of the trigger-locking block.

Assignee: Trigger Empire, Inc.
Inventors: Jesus Guerra
Filing date: 2024-10-25

semiautomatictriggerfirearmmechanismfrt

The patent describes a drop-in system designed to enhance the trigger operation of semiautomatic firearms, featuring components like a trigger-locking block, hump block, and a transfer bar that work together to improve functionality. This system allows for better control and resetting of the trigger during operation, ensuring a more efficient firing mechanism.

Claim 1

A drop-in system for a semiautomatic firearm that includes a trigger assembly pivotal about a trigger axis pin, a bolt carrier that slides back and forth along a receiver of the semiautomatic firearm, a spring-loaded hammer that rotates about a hammer axis pin, a firearm safety including a corresponding safety axis pin extending therefrom, and a bolt carrier guide that extends along an interior of the receiver to guide the bolt carrier back and forth, the drop-in system comprising: an elongated axis retainer plate having one end configured to be fixed to the hammer axis pin and a second end configured to be fixed to the safety axis pin; a trigger-locking block configured to pivot about the firearm safety axis pin, the trigger-locking block including a limit protrusion extending from a lower end thereof to contact the elongated axis retainer plate to limit rearward pivotal movement of the trigger-locking block; a hump block configured to pivot about the trigger pin independently of pivotal movement of the trigger assembly; and a trigger-locking block transfer bar configured to slide along the bolt carrier guide and including a limit protrusion extending from a rear bottom portion thereof. an elongated axis retainer plate having one end configured to be fixed to the hammer axis pin and a second end configured to be fixed to the safety axis pin; a trigger-locking block configured to pivot about the firearm safety axis pin, the trigger-locking block including a limit protrusion extending from a lower end thereof to contact the elongated axis retainer plate to limit rearward pivotal movement of the trigger-locking block; a hump block configured to pivot about the trigger pin independently of pivotal movement of the trigger assembly; and a trigger-locking block transfer bar configured to slide along the bolt carrier guide and including a limit protrusion extending from a rear bottom portion thereof.

Google Patents

https://patents.google.com/patent/US12410980

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12410980