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POLYMER AMMUNITION HAVING A PROJECTILE MADE BY METAL INJECTION MOLDING

  • US 20170089673A1
  • Filed: 09/24/2015
  • Published: 03/30/2017
  • Est. Priority Date: 11/10/2010
  • Status: Active Grant
First Claim
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1. An ammunition having a metal injection molded projectile and a polymer cartridge case comprising:

  • a polymer ammunition cartridge comprising a primer insert comprising a top surface, a primer recess extending into the top surface, a flash aperture positioned in the primer recess and extending through the bottom surface; and

    a coupler extending away from the bottom surface;

    a mid-body molded from a mid-body coupler over the coupler and into the flash aperture to from a flash hole;

    a nose portion comprising a nose coupler connected to the mid-body coupler and extending to a projectile aperture;

    a propellant chamber formed between the projectile aperture and the flash hole;

    a primer inserted into the primer recess;

    a propellant at least partially filling the propellant chamber; and

    a metal injection molded projectile frictionally fitted in the projectile aperture, wherein the metal injection molded projectile comprises a nose extending essentially symmetrically to a shoulder, and an essentially cylindrical bearing surface extending from the shoulder to a base.

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