PRIMER DIFFUSER FOR POLYMER AMMUNITION CARTRIDGES

1 . A diffuser cup adapted to hold a primer used in an ammunition cartridge comprising:

a bottom surface sized to fit in a primer recess for an ammunition cartridge;

a diffuser aperture positioned through the bottom surface and aligned with a flash hole;

a cup wall attached to the bottom surface and extending away from the bottom surface; and

an interior cavity bordered by the cup wall and the bottom surface and sized to frictionally fit the primer.

2 . The diffuser cup of claim 1 , wherein the diffuser cup comprises a metal, an alloy, a composite or a polymer.

3 . The diffuser cup of claim 1 , further comprising an adhesive applied to the bottom surface to contact a primer.

4 . The diffuser cup of claim 1 , further comprising an adhesive applied to the bottom surface to contact the primer recess.

5 . The diffuser cup of claim 1 , further comprising a primer positioned in the interior cavity.

6 . A diffuser ring adapted to separate a primer and a primer recess in an ammunition cartridge comprising:

a diffuser ring sized to fit in a primer recess for an ammunition cartridge having a bottom surface opposite a top surface; and

a diffuser aperture positioned through the bottom surface and the top surface to align with a flash hole of the ammunition cartridge.

7 . The diffuser ring of claim 6 , wherein the diffuser ring comprises a metal, an alloy, a composite or a polymer.

8 . The diffuser ring of claim 6 , further comprising an adhesive applied to the bottom surface to contact a primer.

9 . The diffuser ring of claim 6 , further comprising an adhesive applied to the bottom surface to contact the primer recess.

10 . The diffuser ring of claim 6 , further comprising an adhesive applied to the top surface to contact the primer.

11 . The diffuser ring of claim 6 , further comprising a primer positioned in the interior cavity.