A cartridge for a conducted electrical weapon may comprise a body having a first end opposite a second end and an outer surface opposite an inner surface. A projectile may be disposed within the body. The inner surface of the body may define a plurality of grooves extending from the first end of the body to a location within the body.

A firearm cartridge system is provided and includes a case with a neck portion, body portion, shoulder portion, a base portion, and a indentation. The neck portion has a diameter between about 0.249 in to about 0.256 in. The body portion tapers from a first end having a diameter between about 0.465 in to about 0.475 to a second end having a diameter between about 0.449 in to about 0.458 in. The shoulder portion connects the body portion and neck portion and has a diameter between about 0.395 in to about 0.405 in. The base portion is positioned on the second end of the body portion and has diameter between about 0.463 in to about 0.477 in. The indentation joins the body portion and the base portion and includes a sidewall with angle between 30° to 42°.

A novel castable frangible projectile and techniques for manufacturing such are provided. A cartridge system includes a case defining a volume, a propellant disposed in the volume of the case, and a projectile coupled to the case. The projectile includes a body disposed at least partially within the case and configured to enclose the propellant within the volume of the case. The body is formed of a castable eutectic mixture, the castable eutectic mixture configured to be melted and cast, wherein the body is configured to break into a plurality of fragments upon impact with a target.

A low energy cartridge has a case having a sidewall with an interior surface defining a projectile receptacle along a bore axis and having a forward open case mouth, a projectile having an exterior sidewall closely received in the projectile receptacle and defining a rotational axis, a propellant receptacle defined by the case and having a passage communicating with the projectile receptacle, the projectile exterior sidewall being non-circular in cross section across the rotational axis, and the case sidewall interior surface having a rotational engagement feature configured to rotationally engage the non-circular projectile exterior sidewall. The projectile may be slidably received in the projectile receptacle for propulsion from the forward open case mouth. At least one of the projectile and the sidewall interior surface may have a helical surface feature, such that spin is imparted to the projectile upon propulsion from the case.

Disclosed is a cartridge case for various caliber ammunition that consists essentially of a powdered metal and/or powdered metal alloy that is formed into the cartridge case through an injection mold processing. Also disclosed is a method for forming a cartridge case, which may include use of Metal Injection Molding (“MIM”) processes to produce the cartridge case which retains a primer, propellant, and/or a bullet. The method can include metal injection molding an initial part, and also at least one of tapering and trimming the initial part to form the finished cartridge case. Further embodiments can include the use of Finite Element Method (FEM) analysis to develop an optimized MIM design.

Disclosed is a cartridge case for various caliber ammunition that consists essentially of a powdered metal and/or powdered metal alloy that is formed into the cartridge case through an injection mold processing. Also disclosed is a method for forming a cartridge case, which may include use of Metal Injection Molding (“MIM”) processes to produce the cartridge case which retains a primer, propellant, and/or a bullet. The method can include metal injection molding an initial part, and also at least one of tapering and trimming the initial part to form the finished cartridge case. Further embodiments can include the use of Finite Element Method (FEM) analysis to develop an optimized MIM design.

The present disclosure is directed to firearms that can receive and fire bullets from ammunition with different cartridge case sizes. For example, the receiver may fire a bullet from either a short cartridge, a medium cartridge, or long cartridge after the short, medium, or long cartridge is received by a receiver of the firearm. This firearm may include a receiver portion and a bolt portion that lock together at different relative locations when cartridges of different lengths are received by the receiver portion. The receiver portion may include a first type of alignment retention features (e.g. protrusions) and the bolt portion may include a second type of alignment retention features (e.g. recessions). Once a firearm cartridge is located inside of the firearm, it may be fired based on the receiver and the bolt portions being locked together via physical engagement of the different types of alignment retention features.

Ammunition cartridge comprising a rigid casing including a tubular sleeve and a base closing an end of the casing, a projectile mounted at another end of the casing, a propellant charge contained inside the casing, and an ignition device. The projectile comprises a solid material body having a volume V1 extending between a tip to a trailing end, wherein the projectile further comprises a cavity that extends into the body from the trailing end, a volume V2 of the cavity being at least fifteen percent (15%) of a combined volume V1+V2 of the projectile solid material and cavity: V2>0.15×(V1+V2).

A cartridge for a conducted electrical weapon may comprise a body having a first end opposite a second end and an outer surface opposite an inner surface. A cartridge inner assembly may be removably disposed within the body. The cartridge inner assembly may comprise a propulsion module, a plug, a piston, and/or a retaining clip. The cartridge inner assembly may be configured to cause deployment of an electrode. The electrode may be mechanically and electrically coupled to the piston.

A cartridge for a conducted electrical weapon may comprise a body having a first end opposite a second end and an outer surface opposite an inner surface. A cartridge inner assembly may be removably disposed within the body. The cartridge inner assembly may comprise a propulsion module, a plug, a piston, and/or a retaining clip. The cartridge inner assembly may be configured to cause deployment of an electrode. The electrode may be mechanically and electrically coupled to the piston.