Apr 29, 2025

US12287167 - Firearm

A firearm is disclosed. The firearm contains a lower receiver containing a first opening, wherein the first opening is configured to accommodate a firing mechanism, an upper receiver removably coupled with the lower receiver, a barrel removably coupled with the upper receiver, a bolt carrier assembly positioned within the upper receiver, wherein the bolt carrier assembly is movable between a locked position and an unlocked position, wherein the bolt carrier assembly contains a rear surface, wherein the rear surface of the bolt carrier assembly is positioned between the barrel and the first opening when the bolt carrier assembly is in the locked position.

Assignee: F.M. Products Inc
Inventors: Paul T. Noonan, Aaron Neal Trout
Filing date: 2021-02-26

firearmbolt carriermechanism

The patent describes a firearm featuring a lower receiver with an opening for a firing mechanism, an upper receiver, and a bolt carrier assembly that can transition between locked and unlocked positions. The bolt carrier assembly includes a recoil spring guide rod and a recoil spring, allowing for smooth operation during firing.

Claim 1

A bolt carrier assembly comprising: a bolt carrier; a carrier key coupled with the bolt carrier, wherein the carrier key comprises a through aperture; a recoil spring guide rod at least partially positioned within the through aperture, wherein the bolt carrier is configured to slide along the recoil spring guide rod between a locked position and an unlocked position; and a first recoil spring, wherein the recoil spring guide rod is positioned within the first recoil spring. a bolt carrier; a carrier key coupled with the bolt carrier, wherein the carrier key comprises a through aperture; a recoil spring guide rod at least partially positioned within the through aperture, wherein the bolt carrier is configured to slide along the recoil spring guide rod between a locked position and an unlocked position; and a first recoil spring, wherein the recoil spring guide rod is positioned within the first recoil spring.

Google Patents

https://patents.google.com/patent/US12287167

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12287167