Ammunition assembly

Abstract

Ammunition assemblies including ammunition cartridges are provided herein. According to some embodiments, ammunition cartridges may include a tubular casing having a first and a second end, wherein the tubular casing is at least partially constructed from a polymeric material, and wherein the tubular casing is adapted to receive and retain a propellant, a cap releaseably associable with the first end of the tubular casing, and a rim extending from the second end of the tubular casing, the rim and second end of the tubular casing cooperating together to form an extraction groove for receiving at least a portion of an extractor of a firearm.

1 . An ammunition cartridge, comprising:
 a tubular casing having a first and a second end, wherein the tubular casing is at least partially constructed from a polymeric material, and wherein the tubular casing is adapted to receive and retain a propellant;   a cap releaseably associable with the first end of the tubular casing, the cap being adapted to surround and retain at least a portion of a projectile; and   a rim extending from the second end of the tubular casing, the rim and second end of the tubular casing cooperating together to form an extraction groove for receiving at least a portion of an extractor of a firearm.   
     
     
         2 . The ammunition cartridge of  claim 1 , wherein the tubular casing is formed entirely of a polymeric material. 
     
     
         3 . The ammunition cartridge of  claim 1 , wherein the tubular casing is provided with one or more protrusions extending from an inner surface of the first end of the tubular casing and the cap is provided with one or more grooves adapted to cooperate with the protrusion of the first end of the tubular casing to releaseably associate the cap with the first end of the tubular casing. 
     
     
         4 . The ammunition cartridge of  claim 1 , wherein the cap includes a base having one or more barbs extending outwardly at an angle from an outer surface of the base, the base being insertable into the first end of the tubular casing, the one or more barbs capable of engaging an inner surface of the first end of the tubular casing to secure the cap thereto. 
     
     
         5 . The ammunition cartridge of  claim 4 , wherein at least one of the one or more barbs extends in axial alignment to a longitudinal axis of the cap. 
     
     
         6 . The ammunition cartridge of  claim 4 , wherein at least one of one or more barbs extends orthogonally to a longitudinal axis of the cap. 
     
     
         7 . The ammunition cartridge of  claim 1 , wherein the cap includes a base having an outwardly flared flange for releaseably associating the cap with the first end of the tubular casing. 
     
     
         8 . The ammunition cartridge of  claim 1 , wherein the cap is constructed from brass. 
     
     
         9 . The ammunition cartridge of  claim 1 , wherein the cap is releaseably associable with the first end of the tubular casing in such a way that when the propellant is fire ignited, the cap may translate forward a predetermine distance relative to the tubular casing to present the projectile in close proximity to rifling leads of the firearm. 
     
     
         10 . The ammunition cartridge of  claim 2 , wherein the polymeric material of the first end of the tubular casing is molded around at least a portion of the cap. 
     
     
         11 . The ammunition cartridge of  claim 1 , wherein the rim is a brass rim having a threaded connector extending in axial alignment with a longitudinal axis of the brass rim, the threaded connector releaseably connecting the brass rim to the second of end of the tubular casing. 
     
     
         12 . The ammunition cartridge of  claim 11 , wherein the second end of the tubular casing includes a reduction, and wherein the brass rim and the reduction of the tubular casing cooperate to form the extraction groove for receiving at least a portion of the extractor of the firearm, when the brass rim is joined to the second end of the tubular casing. 
     
     
         13 . The ammunition cartridge of  claim 11 , wherein the brass rim includes an aperture extending in axial alignment with the longitudinal axis of the brass rim, and wherein the aperture of the brass rim cooperates with the second end of the tubular casing to define a cavity for retaining a primer. 
     
     
         14 . An ammunition cartridge, comprising:
 a tubular casing having a first and second end, wherein the tubular casing is at least partially constructed from a polymeric material, and wherein the tubular casing is at least partially filled with a propellant;   a cap releaseably associated with the first end of the tubular casing, the cap retaining at least a portion of a projectile;   a primer disposed with the second end of the tubular casing for igniting the propellant contained within the tubular casing; and   a rim extending from the second end of the tubular casing, the rim and second end of the tubular casing cooperating together to form an extraction groove for receiving at least a portion of an extractor of a firearm.   
     
     
         15 . The ammunition cartridge of  claim 14 , wherein the tubular casing is formed entirely of a polymeric material. 
     
     
         16 . The ammunition cartridge of  claim 14 , wherein the tubular casing is provided with one or more protrusions extending from an inner surface of the first end of the tubular casing and the cap is provided with one or more grooves adapted to cooperate with the one or more protrusions of the first end of the tubular casing to releaseably associate the cap with the first end of the tubular casing. 
     
     
         17 . The ammunition cartridge of  claim 14 , wherein the rim is a brass rim having a threaded connector extending in axial alignment with a longitudinal axis of the brass rim, the threaded connector releaseably connecting the brass rim to the second of end of the tubular casing. 
     
     
         18 . The ammunition cartridge of  claim 17 , wherein the brass rim is provided with an aperture extending in axial alignment with the longitudinal axis of the brass rim, and wherein the aperture of the brass rim cooperates the second end of the tubular casing to define a cavity for retaining a primer. 
     
     
         19 . The ammunition cartridge of  claim 18 , wherein the rim is constructed of brass.