Jan 6, 2026

US12516897 - Compact stock for AR-style firearms

A compact stock for an AR-style firearm includes a receiver extension configured to attach to a lower receiver, a buffer assembly receivable in the receiver extension, a buffer biasing member receivable in the receiver extension, and a buffer locking mechanism. The buffer assembly is configured to reciprocate between a retracted position wherein the buffer assembly is contained within the receiver extension, and an extended position wherein the buffer assembly is in-battery within an upper receiver. The buffer biasing member is configured to bias the buffer assembly toward the extended position. The buffer locking mechanism is configured to selectably retain the buffer assembly and the buffer biasing member within the receiver extension when the buffer assembly is in the retracted position such that the upper receiver is rotatable relative to the lower receiver about a forward take down pin of the firearm unimpeded by the buffer assembly and buffer biasing member.

Assignee: Eight Holdings LLC
Inventors: Teodor Puha
Filing date: 2025-01-03

firearmstockar-style

The patent describes a compact stock for AR-style firearms that features a receiver extension, buffer assembly, and locking mechanism to facilitate the rotation of the upper receiver relative to the lower receiver. Additionally, the design includes rod biasing members that dampen recoil by opposing the rearward movement of rods during firearm discharge.

Claim 1

1 . A compact stock for an AR-style firearm, comprising: a housing configured to be secured to a lower receiver of the firearm; a butt member defining a pair of rod bores therein; a pair of rod biasing members disposed within the pair of rod bores; a pair of rods extending from the housing into the pair of rod bores and against the pair of rod biasing members; and a pair of fasteners configured to connect the pair of rods to the butt member and retain the pair of rods in the pair of rod bores; wherein the pair of rod biasing members are configured to oppose rearward movement of the rods during discharge of the firearm and thereby damp the recoil of the firearm. a housing configured to be secured to a lower receiver of the firearm; a butt member defining a pair of rod bores therein; a pair of rod biasing members disposed within the pair of rod bores; a pair of rods extending from the housing into the pair of rod bores and against the pair of rod biasing members; and a pair of fasteners configured to connect the pair of rods to the butt member and retain the pair of rods in the pair of rod bores; wherein the pair of rod biasing members are configured to oppose rearward movement of the rods during discharge of the firearm and thereby damp the recoil of the firearm.

Google Patents

https://patents.google.com/patent/US12516897

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12516897