Aug 25, 2026

US12716668 - Firearm receiver systems offering a fixed barrel arrangement and pressure relief capability

A firearm receiver system comprises a receiver and a handguard. The receiver includes a front mounting body and a central bore configured for having a bolt carrier slidably disposed therein. The central bore includes a barrel-receiving receptacle at least partially located within the front mounting body. The handguard includes a handguard mounting body receptacle at a first end portion thereof. The front mounting body includes a plurality of interior surfaces each matingly engaged with a corresponding one of a plurality of exterior surfaces of the handguard mounting body receptacle. The receiver and the handguard may unitarily-formed body. The receiver may be configured for accommodating a barrel extension. The front mounting body may be configured for providing a fixed-barrel receiver system. The receiver may accommodate a pressure relief body for enabling the receiver to exhibit pressure relief functionality in the event of an over-pressure event within the receiver.

Assignee: Ares Defense Systems, Inc.
Inventors: Geoffrey A. Herring
Filing date: 2025-08-07

firearmreceiverfixedbarrelpressure relief

The patent describes a firearm receiver system that integrates a receiver and handguard with a fixed-barrel arrangement and a pressure relief capability to manage over-pressure events. It features a central bore for a bolt carrier and a barrel-receiving receptacle, with the handguard designed to securely engage with the receiver through a series of mating surfaces.

Claim 1

1 . A firearm receiver system, comprising: a receiver including a handguard mounting body defining a front end portion of the receiver and a central bore configured for having a bolt carrier slidably disposed therein, and wherein the central bore includes a barrel-receiving receptacle at least partially located within the handguard mounting body; and a handguard including a handguard mounting body receptacle at a first end portion thereof, wherein the handguard mounting body receptacle includes a plurality of interior surfaces each matingly engaged with a corresponding one of a plurality of exterior surfaces of the handguard mounting body, wherein one of said interior surfaces of the handguard mounting body receptacle is a bolt energizing device engaging surface thereof, and wherein one of said exterior surfaces of the handguard mounting body is at least partially defined by a bolt energizing device engaging portion of the receiver. a receiver including a handguard mounting body defining a front end portion of the receiver and a central bore configured for having a bolt carrier slidably disposed therein, and wherein the central bore includes a barrel-receiving receptacle at least partially located within the handguard mounting body; and a handguard including a handguard mounting body receptacle at a first end portion thereof, wherein the handguard mounting body receptacle includes a plurality of interior surfaces each matingly engaged with a corresponding one of a plurality of exterior surfaces of the handguard mounting body, wherein one of said interior surfaces of the handguard mounting body receptacle is a bolt energizing device engaging surface thereof, and wherein one of said exterior surfaces of the handguard mounting body is at least partially defined by a bolt energizing device engaging portion of the receiver.

Google Patents

https://patents.google.com/patent/US12716668

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12716668