US12449221 - Assembly of a receiver with a barrel

The patent describes a firearm receiver assembly that allows for the replaceable attachment of a barrel through a clamping connection featuring a longitudinal slot and transverse screws. This design includes a transverse pin that secures the barrel and connects the receiver to the firearm’s stock or frame, enhancing modularity and ease of maintenance.

Claim 1

1. An assembly of a receiver with a barrel, wherein the barrel is inserted into a barrel hole in the receiver and the barrel is attached in a replaceable manner by a clamping connection that comprises a longitudinal slot that longitudinally divides the receiver wall at the insertion location of the barrel and at least two transverse screws configured to pass through the receiver at the longitudinal slot, and a transverse hole extends into the receiver at the longitudinal slot and a transverse pin passes through the transverse hole in such a way that the transverse pin is received in a corresponding transverse recess in the barrel, the transverse pin having a threaded hole extending perpendicular to the longitudinal axis of the transverse pin and a connecting screw received in the threaded hole, wherein the connecting screw further passes through a straight-through hole in the receiver and through a stock/frame of the firearm to connect the receiver to the stock/frame of the firearm.

Google Patents

https://patents.google.com/patent/US12449221

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12449221