Apr 21, 2026

US12607425 - Opposing force recoil reduction in a firearm

A firearm which provides recoil reduction using the kinetic energy of the hammer to cancel a portion of the bolt's recoil after a round has been fired. After the bolt starts to move rearward in response to the detonation, the hammer's forward kinetic energy is transferred onto the bolt by striking it at the moment the bolt starts to travel rearward or after the bolt has started its rearward motion.

Assignee: 3D Defense, LLC
Inventors: Darren J Booth, Steven Clark Butterfield
Filing date: 2024-06-17

firearmrecoilmechanism

The patent describes a firearm designed to reduce recoil by utilizing the kinetic energy of the hammer, which strikes the bolt as it moves rearward after firing. This interaction between the hammer and bolt helps to counteract the recoil experienced when a round is discharged.

Claim 1

1 . A firearm with an opposing force recoil reduction system comprising: a barrel with a chamber for holding a round; a bolt that moves within an upper housing from a rearward position to a forward position in contact with the barrel; a firing pin within the bolt for contacting a primer in the round to fire the round; a hammer that moves behind the bolt in the upper housing; a trigger assembly with a sear that holds the hammer in a cocked position for firing; at least one hammer spring that moves the hammer forward toward the bolt to engage the firing pin and the bolt in response to a user operating the trigger assembly; wherein the hammer moves forward to engage the firing pin and detonate the primer to fire the round; and wherein the hammer in the same forward movement engages and comes in first contact with the bolt as the bolt moves rearward after the primer is detonated and transfers kinetic energy of the hammer to the bolt thereby reducing recoil of the firearm. a barrel with a chamber for holding a round; a bolt that moves within an upper housing from a rearward position to a forward position in contact with the barrel; a firing pin within the bolt for contacting a primer in the round to fire the round; a hammer that moves behind the bolt in the upper housing; a trigger assembly with a sear that holds the hammer in a cocked position for firing; at least one hammer spring that moves the hammer forward toward the bolt to engage the firing pin and the bolt in response to a user operating the trigger assembly; wherein the hammer moves forward to engage the firing pin and detonate the primer to fire the round; and wherein the hammer in the same forward movement engages and comes in first contact with the bolt as the bolt moves rearward after the primer is detonated and transfers kinetic energy of the hammer to the bolt thereby reducing recoil of the firearm.

Google Patents

https://patents.google.com/patent/US12607425

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12607425