Sep 30, 2025

US12429298 - Reduced weight firearm

A rotating bolt firearm may be configured to fire a .308 cartridge. However, the firearm may have a reduced weight in comparison to standard .308 rifles. The firearm may have many components typically used in a .223 rifle. The firearm may include a barrel extension with an extractor gap, which allows a .308 bolt to fit within a .223 sized barrel extension. The firearm may comprise an elongated magazine well in comparison to a .223 mil-spec rifle. The firearm may weigh less than 6.8 pounds with a 16-inch barrel, or less than 6.3 pounds with a 10.5 inch barrel.

Assignee: PATRIOT ORDANCE FACTORY
Inventors: Frank L. DeSomma
Filing date: 2022-07-19

firearmreduced_weightrotating_bolt308_cartridge

The patent describes a lightweight rotating bolt firearm designed to fire .308 cartridges while utilizing components typically found in .223 rifles, resulting in a total weight of less than 6.8 pounds with a 16-inch barrel. Key features include a barrel extension with an extractor gap to accommodate a .308 bolt within a .223-sized barrel extension and an elongated magazine well.

Claim 1

A rotating bolt firearm, comprising: an upper receiver defining a first rear pin hole; a rear receiver pin having a first diameter; a lower receiver defining a second rear pin hole and a first selector hole, a selector having a second diameter, the lower receiver coupled to the upper receiver, wherein the first diameter and the second diameter are arranged in an overlapping configuration along a first axis perpendicular to a centerline of the upper receiver of the firearm; a barrel coupled to the upper receiver; a bolt carrier group comprising an extractor; a barrel extension coupled to the barrel, wherein the barrel extension comprises: a plurality of lugs spaced around an interior circumference of the barrel extension. an upper receiver defining a first rear pin hole; a rear receiver pin having a first diameter; a lower receiver defining a second rear pin hole and a first selector hole, a selector having a second diameter, the lower receiver coupled to the upper receiver, wherein the first diameter and the second diameter are arranged in an overlapping configuration along a first axis perpendicular to a centerline of the upper receiver of the firearm; wherein the first diameter and the second diameter are arranged in an overlapping configuration along a first axis perpendicular to a centerline of the upper receiver of the firearm; a barrel coupled to the upper receiver; a bolt carrier group comprising an extractor; a barrel extension coupled to the barrel, wherein the barrel extension comprises: a plurality of lugs spaced around an interior circumference of the barrel extension. a plurality of lugs spaced around an interior circumference of the barrel extension.

Google Patents

https://patents.google.com/patent/US12429298

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12429298