# US 12,222,187 B2 · Folding stock adapter for military-style assault rifles and a method for its use

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- Number: US 12,222,187 B2
- Document ID: US12222187B2
- Status: Granted
- Kind: B2
- Application number: 18/449,684
- Filed: 2023-08-14
- Published: 2024-04-18
- Granted: 2025-02-11
- Earliest claimed: 2012-02-19
- Applicants: Zachary Law
- Inventors: Zachary Law
- Web page: https://patentgrep.com/patent/US12222187B2

## CPC

- F41C 23/14: Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop
- F41A 11/04: Articulated or collapsible guns, i.e. with hinged or telescopic parts for transport or storage (breakdown shotguns or rifles F41C7/11; folding or telescopic stocks or stock parts F41C23/04)
- F41C 23/04: Folding or telescopic stocks or stock parts (articulated or collapsible guns F41A11/04)
- F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE

## Abstract

The present folding stock adapter can be used with many types of military-type assault rifles that typically comprise a receiver extension, buffer and action spring. The present folding stock adapter can be used to add a folding capability to a standard stock allowing it to fold against a rifle's receiver when the weapon is not in use, thus reducing the overall length of the weapon. This reduction in length can facilitate its maneuverability, storage and transport in cramped quarters. The present device can also allow for the quick unfolding of the stock in order to allow the weapon to function and be fire normally.

## Claims

### Claim 1

A method for using a folding stock adapter for a rifle comprising:
providing a folding stock adapter comprising a dead hinge section the dead hinge section comprising a dead hinge opening, a live hinge section comprising a live hinge opening, and a hinged joint configured to connect the live hinge section to the dead hinge section allowing the live hinge section and dead hinge section to move between an open position and a closed position wherein the dead hinge opening and the live hinge opening create a continuous tube passing through both the dead hinge section and the live hinge section when in the closed position;
providing a rifle comprising a receiver, the receiver comprising a rear threaded section, a stock comprising a receiver extension;
connecting the dead hinge section of the folding stock adapter to the rear threaded section of the receiver by screwing the threaded flange into the rear threaded section of the receiver,
connecting the stock to the live hinge section by screwing the receiver extension into the dead hinge section;
placing the rifle into a folded position by placing the folding stock adapter in an open position; and
placing the rifle into an unfolded position by placing the folding stock adapter in a closed position.