The present invention provides a subsonic ammunition including a polymeric casing body; a propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber; a propellant disposed and confined within the propellant chamber; a primer insert positioned at the body base and in communication with the propellant chamber; a primer and diffuser disposed in the primer insert in combustible communication with the propellant; and a projectile frictionally fitted in the mouth in combustible communication with the propellant.

Proposed is a cover structure with a double cover structure and a shooting case of munition having the same. The cover structure with a double cover structure includes: a shooting case main body having an inner space with an open upper side; a cover member seated on the open upper side of the shooting case main body to seal the open upper side; and a cover fixing member coupled to the shooting case main body to fix a position of the cover member, so that the position of the cover member is strongly fixed while simplifying a structure by the double cover structure to increase an internal pressure of the shooting case, thereby increasing a range of munition and maintaining performance of munition.

Proposed is a cover structure with a double cover structure and a shooting case of munition having the same. The cover structure with a double cover structure includes: a shooting case main body having an inner space with an open upper side; a cover member seated on the open upper side of the shooting case main body to seal the open upper side; and a cover fixing member coupled to the shooting case main body to fix a position of the cover member, so that the position of the cover member is strongly fixed while simplifying a structure by the double cover structure to increase an internal pressure of the shooting case, thereby increasing a range of munition and maintaining performance of munition.

A method of manufacturing cartridge cases, wherein the method comprises fabricating a plurality of substantially identically sized and shaped unmarked inventory cases suitable for use in manufacturing a plurality of different caliber cartridges and selecting a number of the plurality of the unmarked inventory cases to be used to manufacturing a selected one of the plurality different caliber cartridges. The method further comprises inscribing, via a laser inscription device, the selected number of unmarked inventory cases to identify at least the selected one of the plurality of different caliber cartridges the selected number of unmarked inventory cases are to be used to manufacture.

A method of manufacturing cartridge cases, wherein the method comprises fabricating a plurality of substantially identically sized and shaped unmarked inventory cases suitable for use in manufacturing a plurality of different caliber cartridges and selecting a number of the plurality of the unmarked inventory cases to be used to manufacturing a selected one of the plurality different caliber cartridges. The method further comprises inscribing, via a laser inscription device, the selected number of unmarked inventory cases to identify at least the selected one of the plurality of different caliber cartridges the selected number of unmarked inventory cases are to be used to manufacture.

The present invention provides a subsonic ammunition including a polymeric casing body; a propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber; a propellant disposed and confined within the propellant chamber; a primer insert positioned at the body base and in communication with the propellant chamber; a primer and diffuser disposed in the primer insert in combustible communication with the propellant; and a projectile frictionally fitted in the mouth in combustible communication with the propellant.

The present invention provides a subsonic ammunition including a polymeric casing body; a propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber; a propellant disposed and confined within the propellant chamber; a primer insert positioned at the body base and in communication with the propellant chamber; a primer and diffuser disposed in the primer insert in combustible communication with the propellant; and a projectile frictionally fitted in the mouth in combustible communication with the propellant.

A method of manufacturing cartridge cases, wherein the method comprises fabricating a plurality of substantially identically sized and shaped unmarked inventory cases suitable for use in manufacturing a plurality of different caliber cartridges and selecting a number of the plurality of the unmarked inventory cases to be used to manufacturing a selected one of the plurality different caliber cartridges. The method further comprises inscribing, via a laser inscription device, the selected number of unmarked inventory cases to identify at least the selected one of the plurality of different caliber cartridges the selected number of unmarked inventory cases are to be used to manufacture.

A method of manufacturing cartridge cases, wherein the method comprises fabricating a plurality of substantially identically sized and shaped unmarked inventory cases suitable for use in manufacturing a plurality of different caliber cartridges and selecting a number of the plurality of the unmarked inventory cases to be used to manufacturing a selected one of the plurality different caliber cartridges. The method further comprises inscribing, via a laser inscription device, the selected number of unmarked inventory cases to identify at least the selected one of the plurality of different caliber cartridges the selected number of unmarked inventory cases are to be used to manufacture.

An ammunition cartridge having a cup-shaped casing. The cup-shaped casing has a closed reward end with a rearward diameter and an open forward end having a forward diameter that is larger than the rearward diameter. A sidewall extends between the peripheries of the rearward end and the top end of the casing. The sidewall tapers from the smaller rearward diameter to the larger forward diameter along a length of a hollow interior of the casing that holds a propellant charge.