Jan 20, 2026

US12529535 - Ammunition convertible firearm

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A firearm as disclosures herein comprises a main receiver body, a barrel, a breech bolt structure, a buffer assembly, a trigger group assembly, a bolt catch and at least one of an auto-sear, a magazine adapter and a breech bolt anti-rotation structure. The main receiver body is preferably of a monolithic construction whereby the handguard and breech bolt carrying bore can be manufactured from a single piece of material. The auto-sear is tripped by engagement with a buffer of the buffer assembly. The magazine adapter has an exterior surface structure engaged with a mating interior surface structure of a magazine well space of the main receiver body. A distal end portion of the breech bolt anti-rotation structure is engageable by the buffer for limiting forward travel of the buffer when the barrel is detached from the main receiver body.

Assignee: Ares Defense Systems, Inc.
Inventors: Geoffrey A. Herring, Angela M. Vazquez, Jason Winderweedle

firearmammunitionbreech boltreceivertrigger group

The patent describes a convertible firearm featuring a monolithic main receiver body that integrates a central bore, ammunition feed port, and handguard, allowing for efficient assembly and maintenance. It includes a breech bolt structure designed to fit through the front-end face of the main body, ensuring compatibility with various barrel attachments.

Claim 1

1 . A firearm, comprising: a main body including a central bore, an ammunition feed port, and a handguard, wherein the central bore extends between a front-end face at a front-end portion of the main body and a rear-end face at a rear-end portion of the main body, and wherein the handguard is positioned between the ammunition feed port and the front-end face; a breech bolt structure operably disposed within a space encompassed by the central bore, wherein the breech bolt structure and the central bore are jointly configured for enabling the breech bolt structure to be placed into the central bore through the front-end face; and a barrel attached to the main body, wherein a mounting portion of the barrel is engaged with the front-end portion of the main body. a main body including a central bore, an ammunition feed port, and a handguard, wherein the central bore extends between a front-end face at a front-end portion of the main body and a rear-end face at a rear-end portion of the main body, and wherein the handguard is positioned between the ammunition feed port and the front-end face; a breech bolt structure operably disposed within a space encompassed by the central bore, wherein the breech bolt structure and the central bore are jointly configured for enabling the breech bolt structure to be placed into the central bore through the front-end face; and a barrel attached to the main body, wherein a mounting portion of the barrel is engaged with the front-end portion of the main body.

Google Patents

https://patents.google.com/patent/US12529535

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12529535