×

Direct drive retrofit for rifles

DC CAFC
  • US 7,469,624 B1
  • Filed: 11/12/2007
  • Issued: 12/30/2008
  • Est. Priority Date: 11/12/2007
  • Status: Active Grant
First Claim
Patent Images

1. A direct drive retrofit system for use with an a rifle for conversion from an impingement system comprising:

  • a gas block, said gas block having a barrel bore and a gas plug bore, both extending completely through said gas block, said barrel bore and said gas plug bore being substantially parallel one to the other, said barrel bore being configured to receive a barrel securely inserted therein, said barrel bore having an aperture being configured to receive a discharge gas from a gas port formed through said barrel proximate to a muzzle of said rifle, said aperture extending from said barrel bore to said gas plug bore, said aperture directing said discharge gas towards said gas plug bore, said gas block being secured to said barrel substantially preventing movement of said gas block relative to said barrel and being configured to hermetically transport said discharge gas from said barrel to said gas plug bore, said gas plug bore having a muzzle end opening towards said muzzle and a breech end opening towards a breech of said rifle;

    a gas plug;

    said gas plug being inserted into said gas plug bore entering from said muzzle end, said gas plug being secured within said gas plug bore by a securing means, an exhaust portion of the gas plug extending out of said breech end of said gas block, said gas plug having a passage being formed internally, said discharge gas being delivered hermetically from said aperture to said passage and towards said exhaust portion;

    a bolt carrier key, said bolt carrier key being configured to mount directly to a bolt carrier, said bolt carrier key moving synchronously with said bolt carrier;

    a rod, said rod being configured as a single part or a securely connected assembly, said rod extending from said gas plug to said bolt carrier key, a first end of said rod being coupled to said gas plug, a second end being coupled to said bolt carrier key;

    an actuating means, said actuating means forming an actuation coupling between said gas plug and said rod, said actuating means imparting a kinetic energy of the high pressure said discharge gas on said rod, said actuating means permitting said rod to be actuated linearly in a breechward direction;

    a biasing means, said biasing means urging said rod towards said gas plug with an urging force, said biasing means permitting translational movement of said rod when said urging force is exceeded by said actuating means,wherein, upon the firing of a round, said discharge gas under pressure is diverted into said gas port of said barrel, said discharge gas then being transported to said aperture, said discharge gas thereafter being delivered into said passage of said gas plug;

    and wherein, said discharge gas provides a force to the actuating means, said actuating means causing said breechward motion of said rod translationally;

    and wherein, said rod thereafter actuates said bolt carrier key causing a breechward translation of said bolt carrier, said breechward translation activating said bolt carrier and an extractor;

    and wherein, said rod can be uninstalled without removal of a hand guard or said gas block by extracting said gas plug from the gas plug bore from said muzzle end, said actuating means releasing said rod, said rod being freely extracted through said gas plug bore thereafter by a user in a single piece.

View all claims
  • 9 Assignments
Timeline View
Assignment View
    ×
    ×