Jul 14, 2026

US12680771 - Caliber and feed-side convertible firearm

Disclosed herein is a firearm including a main body having attached thereto a trigger group, a belt feed mechanism, a bolt carrier group, a barrel extension group, a belt box mount, and a stock assembly. The trigger group engages a bottom face of the main body. The trigger group enables fully-automatic mode of operation or select-fire modes of operation (automatic and semi-automatic). The belt feed mechanism is user-selectively engaged with a left-side or a right-side engagement interface of the main body. A top portion (e.g., top surface) of the belt box mount may engage a mating interface at a bottom portion (e.g., bottom surface) of the main body for fixedly engaging the belt box mount to the main body in a manner that inhibits vertical separation of the belt box mount from the main body The stock assembly is engaged with a rear end portion of the main body.

Assignee: Ares Defense Systems, Inc.
Inventors: Geoffrey A. Herring
Filing date: 2025-06-27

firearmautomaticbelt-fedselect-fire

The patent describes a convertible firearm that features a main body with a trigger group and a belt feed mechanism that can be engaged on either side, allowing for flexible operation in fully-automatic or select-fire modes. This design enables the use of belt-fed ammunition while ensuring secure attachment of the belt feed assembly to the firearm’s main body.

Claim 1

1 . A firearm, comprising: a main body having opposing belt feed assembly mounting structures; and a belt feed assembly selectively engageable with either one of the belt feed assembly mounting structures for enabling belt-fed ammunition to be supplied from the belt feed assembly when engaged with either one of the belt feed assembly mounting structures. a main body having opposing belt feed assembly mounting structures; and a belt feed assembly selectively engageable with either one of the belt feed assembly mounting structures for enabling belt-fed ammunition to be supplied from the belt feed assembly when engaged with either one of the belt feed assembly mounting structures.

Google Patents

https://patents.google.com/patent/US12680771

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12680771