Apr 22, 2025

US12281868 - Increased capacity ammunition magazine

An increased capacity replacement firearm ammunition magazine for a polymer or polymer-over-metal single stack firearm ammunition magazine for a Glock® handgun, comprises a metallic body dimensioned to compatibly replace the single stack magazine for the Glock® handgun, the single stack magazine having a body having exterior dimensions defined by polymer or polymer-over-metal forward, aft, and side walls, the metallic body having exterior dimensions defined by metallic forward, aft, and side walls, an exterior width dimension of the metallic side walls compatibly matching an exterior width dimension of the side walls of the single stack magazine body, the metallic walls being thinner than the walls of the single stack magazine, the thinner metallic walls allowing an at least partially laterally offset arrangement of cartridges in the metallic body, the forward wall of the metallic body including at least one spacer extending along the forward wall, the spacer sized such that a forward-to-aft exterior dimension of the metallic body compatibly matches a forward-to-aft exterior dimension of the single stack magazine body, a length dimension of the metallic body compatibly matches a length dimension of the single stack magazine body, a cut-out in the metallic body adapted to receive a firearm magazine catch therein, the cut-out including an upper edge, and polymer over at least the upper edge of the cut-out.

Assignee: Shield Arms, LLC
Inventors: Brandon Michael Zeider, Seth Martin Berglee, Raymond Dean Brandly, Cody Blighe Greenfield
Filing date: 2023-07-10

ammunitionmagazinefirearm

The patent describes an increased capacity replacement magazine for Glock® handguns, featuring a metallic body designed to fit within the existing dimensions of a single stack polymer magazine while allowing for a staggered arrangement of cartridges. This design includes a forward wall with a spacer and a polymer edge that interacts with the magazine catch, ensuring compatibility with the firearm’s frame.

Claim 1

A pistol magazine, comprising: a metallic tubular body defining a hollow interior and having a forward wall, a rearward wall, a first side wall, a second opposite side wall, an open top with feed lips, and an open bottom, a removable closure member enclosing the open bottom of the body, the forward wall having at least one longitudinally extending spacer projecting forwardly therefrom, at least one of the first and second side walls having an edge configured to interact with a magazine catch of a polymer frame pistol configured to accommodate a single stack polymer or polymer-over-metal magazine, a first internal dimension between the forward wall and the rearward wall dimensioned to fit 9×19 mm cartridges, a second internal dimension between the first side wall and the second opposite side wall dimensioned to fit 9×19 mm cartridges with a staggered arrangement of the cartridges, the body having a height dimension configured to fit within a handgrip of the polymer frame pistol and locate the removable closure member directly adjacent to the bottom of the handgrip when the magazine is inserted into the handgrip of the polymer frame pistol, a first external dimension of the body from the forwardmost surface of the spacer to the rearmost surface of the rearward wall matching the corresponding exterior dimension of the single stack polymer or polymer-over-metal magazine, and a second external dimension of the body from the external surface of the first side wall to the external surface of the second side wall matching the corresponding exterior dimension of the single stack polymer or polymer-over-metal magazine, wherein the edge is formed of polymer. a metallic tubular body defining a hollow interior and having a forward wall, a rearward wall, a first side wall, a second opposite side wall, an open top with feed lips, and an open bottom, a removable closure member enclosing the open bottom of the body, the forward wall having at least one longitudinally extending spacer projecting forwardly therefrom, at least one of the first and second side walls having an edge configured to interact with a magazine catch of a polymer frame pistol configured to accommodate a single stack polymer or polymer-over-metal magazine, a first internal dimension between the forward wall and the rearward wall dimensioned to fit 9×19 mm cartridges, a second internal dimension between the first side wall and the second opposite side wall dimensioned to fit 9×19 mm cartridges with a staggered arrangement of the cartridges, the body having a height dimension configured to fit within a handgrip of the polymer frame pistol and locate the removable closure member directly adjacent to the bottom of the handgrip when the magazine is inserted into the handgrip of the polymer frame pistol, a first external dimension of the body from the forwardmost surface of the spacer to the rearmost surface of the rearward wall matching the corresponding exterior dimension of the single stack polymer or polymer-over-metal magazine, and a second external dimension of the body from the external surface of the first side wall to the external surface of the second side wall matching the corresponding exterior dimension of the single stack polymer or polymer-over-metal magazine, wherein the edge is formed of polymer.

Google Patents

https://patents.google.com/patent/US12281868

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12281868