Insert - GunClaims

Sep 1, 2026

US12723855 - Practice weighted insert for firearm magazine

A weighted safety-insert for a magazine of a firearm. The safety-insert includes a body and a slidable portion. The body includes a protrusion extending downwardly from a bottom surface, and a channel extends within each of first and second side walls. A pair of flanges extend outwardly from the side walls, adjacent the bottom surface. The slidable portion, includes a top surface, and first and second side wall, each having an upper end disposed higher than the top surface and terminating in an inwardly facing lip. The slidable portion is adapted to engage the body such that the top surface of the slidable portion rests against the top surface of the body, the inwardly facing lips being slidably disposed within the channels in the side walls of the body or a prismatic protrusion of the slideable portion being slidably disposed in a channel in the top side of the body.

Jan 27, 2026

US12535306 - Polymer cartridge with snapfit metal insert

A high strength polymer-based cartridge has a polymer case with a mouth, a neck, a shoulder below the neck, and a body below the shoulder and having a case thickness (Tc). The body has a flat portion comprising a pull thickness (Tp), and a dip, closer to the shoulder than the flat portion and comprising a dip thickness (Tb). The cartridge can also include an insert attached to the polymer case opposite the shoulder. The insert can have a flat section contacting the flat portion and comprising an insert wall thickness (Ti), and a bulge engaging the dip to maintain the insert on the polymer case. Tc, Tp, Tb, and Ti are related by Tp+Tb+Ti=Tc. These variables also have ranges where Tp is at least 0.010 inches in thickness, Tb is greater than or equal to Tp, and Tc is a function of a loaded projectile.