Patents Assigned to Rock River Arms, Inc.
  • Firearm having gas piston system
    Patent number: 8468929
    Abstract: A firearm having a gas piston system includes a bolt carrier, an adjustable gas piston block located forward on the firearm and an over-the-barrel spring and guide rod arrangement, all of which is housed and contained in a top rail that runs the length of the firearm and that maintains the alignment of these firearm components. The firearm also includes an ambidextrous, non-reciprocating charging handle located forward on the firearm and positioned within the top rail for charging the firearm.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: June 25, 2013
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm Having Gas Piston System
    Publication number: 20110271827
    Abstract: A firearm having a gas piston system includes a bolt carrier, an adjustable gas piston block located forward on the firearm and an over-the-barrel spring and guide rod arrangement, all of which is housed and contained in a top rail that runs the length of the firearm and that maintains the alignment of these firearm components. The firearm also includes an ambidextrous, non-reciprocating charging handle located forward on the firearm and positioned within the top rail for charging the firearm.
    Type: Application
    Filed: May 6, 2011
    Publication date: November 10, 2011
    Applicant: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, JR.
  • Trigger guard
    Patent number: D627415
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: November 16, 2010
    Assignee: Rock River Arms, Inc.
    Inventor: James Finn
  • Firearm
    Patent number: D636044
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 12, 2011
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D636045
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 12, 2011
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D636046
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 12, 2011
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D636047
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 12, 2011
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D636048
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 12, 2011
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D636454
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 19, 2011
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D637678
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: May 10, 2011
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D654550
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: February 21, 2012
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D671184
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: November 20, 2012
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D688347
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 20, 2013
    Assignee: Rock River Arms, Inc.
    Inventor: Lester Larson, Jr.
  • Firearm
    Patent number: D695866
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 17, 2013
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D695867
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 17, 2013
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D695868
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 17, 2013
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D695869
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 17, 2013
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D696375
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 24, 2013
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D699312
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: February 11, 2014
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.
  • Firearm
    Patent number: D699313
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: February 11, 2014
    Assignee: Rock River Arms, Inc.
    Inventors: Mark Larson, Lester Larson, Jr.