Nov 25, 2025

US12480729 - Firearms, systems, and methods for quick connection of a barrel to a firearm

Firearms, components, systems and methods to quickly connect or remove a barrel to or from an upper receiver, the receiver including an elongated body defining a central bore and configured to receive a barrel of a firearm, a cam positioned within the receiver and oriented transverse the central axis where turning the cam locks a barrel into the receiver, and in aspects includes a spring which straddles the barrel and applies a force to a hand guard which in turn applies force to a rim of the barrel to lock the barrel within the upper receiver.

Inventors: Matthew Butcher
Filing date: 2024-12-30

firearmbarrelreceivercomponent

This patent describes a firearm system that allows for the quick attachment and detachment of a barrel from an upper receiver using a cam mechanism and a spring-loaded hand guard. The design aims to enhance the ease of barrel changes while ensuring a secure fit during operation.

Claim 1

1 . A firearm component, comprising: an upper receiver having a barrel end, a stock end opposite the barrel end, and a spring cavity, the barrel end configured to receive a barrel; a hand guard having an output end and a receiver end, the receiver end configured to mate with the barrel end of the upper receiver; and a spring configured to fit into the spring cavity to abut the hand guard at the receiver end; whereby the spring is configured to press against the hand guard which abuts a barrel that may be inserted into the barrel end. an upper receiver having a barrel end, a stock end opposite the barrel end, and a spring cavity, the barrel end configured to receive a barrel; a hand guard having an output end and a receiver end, the receiver end configured to mate with the barrel end of the upper receiver; and a spring configured to fit into the spring cavity to abut the hand guard at the receiver end; whereby the spring is configured to press against the hand guard which abuts a barrel that may be inserted into the barrel end.

Google Patents

https://patents.google.com/patent/US12480729

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12480729