Feb 24, 2026

US12560392 - Action system for firearm

An action system for reducing recoil and muzzle rise in firearms is provided. The action system includes an outer housing having an internal cavity, a buffer tube in operable communication with a bolt carrier group of a firearm, and a slidable buffer within the buffer tube. A lever arm, pivotally secured within the outer housing, is operably connected to the buffer and moves radially under the buffer's force. A spring in the cavity engages with the lever arm, compressing as the lever arm is acted upon by the linear force produced by a bolt carrier group until the spring force exceeds the linear force, thus forcing the buffer in a direction opposite the direction of the linear force.

Assignee: McCloy IP, LLC
Inventors: Michael McCloy
Filing date: 2024-07-19

firearmactionrecoilmechanism

The patent describes an action system designed to minimize recoil and muzzle rise in firearms by utilizing a buffer and a torsion spring connected via a lever arm. This system allows the buffer to move in response to forces generated during operation, enhancing stability and control during firing.

Claim 1

1 . An action system for a firearm comprising: a buffer of a firearm in operable communication with a torsion spring via a lever arm, wherein said lever arm is pivotally connected to a lever point at a lever end, wherein said lever point is positioned below said buffer when said firearm is in an upright position, wherein said torsion spring exerts a spring force on said lever arm, wherein said lever arm moves radially about said lever point when acted upon by a linear force acting on said buffer, and wherein compression of said torsion spring by said lever arm via said linear force acting on said buffer causes said spring force of said torsion spring to increase until a lever force acting on said buffer is greater than said linear force acting on said buffer, forcing said buffer into a direction opposite said linear force. a buffer of a firearm in operable communication with a torsion spring via a lever arm, wherein said lever arm is pivotally connected to a lever point at a lever end, wherein said lever point is positioned below said buffer when said firearm is in an upright position, wherein said torsion spring exerts a spring force on said lever arm, wherein said lever arm moves radially about said lever point when acted upon by a linear force acting on said buffer, and wherein compression of said torsion spring by said lever arm via said linear force acting on said buffer causes said spring force of said torsion spring to increase until a lever force acting on said buffer is greater than said linear force acting on said buffer, forcing said buffer into a direction opposite said linear force. wherein said lever arm is pivotally connected to a lever point at a lever end, wherein said lever point is positioned below said buffer when said firearm is in an upright position, wherein said torsion spring exerts a spring force on said lever arm, wherein said lever arm moves radially about said lever point when acted upon by a linear force acting on said buffer, and wherein compression of said torsion spring by said lever arm via said linear force acting on said buffer causes said spring force of said torsion spring to increase until a lever force acting on said buffer is greater than said linear force acting on said buffer, forcing said buffer into a direction opposite said linear force.

Google Patents

https://patents.google.com/patent/US12560392

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12560392