SUBSONIC POLYMERIC AMMUNITION

摘要

The present invention provides a subsonic ammunition including a polymeric casing body comprising a generally cylindrical hollow polymer body having a body base at a first end thereof and a mouth at a second end to define a propellant chamber; a propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber, wherein the propellant chamber has an internal volume that is at least 10% less than the open internal volume of a standard casing of equivalent caliber; 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 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.

主权项

1. A subsonic ammunition comprising:
a polymeric casing body comprising a generally cylindrical hollow polymer body having a body base at a first end thereof and a forward end opening at a second end to define a propellant chamber;
a substantially cylindrical insert overmolded at the body base, wherein the substantially cylindrical insert comprisesa top surface opposite a bottom surface;a substantially cylindrical coupling element extending away from the bottom surface forming an interior surface inside the substantially cylindrical coupling element and an exterior surface;a primer recess in the top surface that extends toward the bottom surface,a primer flash aperture positioned in the primer recess to extend through the bottom surface, anda flange that extends circumferentially about an outer edge of the top surface, wherein the flange is adapted to receive a polymer overmolding; a propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber, wherein the propellant chamber has an internal volume that is at least 10% less than the open internal volume of a standard casing of equivalent caliber; a propellant disposed and confined within the propellant chamber; a primer disposed in the primer recess primer insert in combustible communication with the propellant; and a projectile frictionally fitted in the forward end opening in combustible communication with the propellant.