Patents Assigned to Rock River Arms, Inc.
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Patent number: 9194638Abstract: An AR-style firearm includes a specially designed lower receiver, a specially designed upper receiver mounted to the lower receiver, a pistol hand grip mounted to the lower receiver, a handguard mounted around a barrel, a specially designed magazine well formed in the lower receiver that is configured to receive an AK-47 magazine or similar magazine, and a specially designed, ambidextrous magazine release that holds and selectively releases the magazine from the magazine well.Type: GrantFiled: October 17, 2013Date of Patent: November 24, 2015Assignee: Rock River Arms, Inc.Inventors: Lester C. Larson, Jr., Mark Larson
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Patent number: 9016188Abstract: 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: GrantFiled: March 10, 2014Date of Patent: April 28, 2015Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: 8985007Abstract: 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 further includes components that provide full auto firing capability. These components include a specially designed auto bracket that cooperates with a modified bolt carrier and a modified upper receiver.Type: GrantFiled: March 10, 2014Date of Patent: March 24, 2015Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: 8959820Abstract: A handguard or other cover for a firearm includes a shell or body with a hollow interior cavity and a retaining structure configured to engage the forearm and retain the shell in place on the forearm, where the retaining structure is releasable to permit removal of the shell from the forearm. The shell extends between first and second edges around an angular range greater than 180° and less than 360° to define the shell in a semi-tubular shape or a C-shape. The shell may have a concave inner surface and a convex outer surface extending between the first and second edges. The first edge is spaced from the second edge to define a gap providing access to the interior cavity, and the shell is configured to be connected to a forearm for the firearm by inserting the forearm within the interior cavity.Type: GrantFiled: July 9, 2013Date of Patent: February 24, 2015Assignee: Rock River Arms, Inc.Inventor: Lester Larson, Jr.
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Patent number: 8931197Abstract: A handguard or other cover for a firearm includes a shell or body with a hollow interior cavity and a retaining structure configured to engage the forearm and retain the shell in place on the forearm, where the retaining structure is releasable to permit removal of the shell from the forearm. The shell may have a concave inner surface and a convex outer surface extending between the first and second edges. The concave inner surface may include at least one tab extending outwardly from the inner surface which is configured to be connected to a slot or opening formed in the forearm for the firearm.Type: GrantFiled: February 14, 2014Date of Patent: January 13, 2015Assignee: Rock River Arms, Inc.Inventor: Lester C. Larson
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Publication number: 20150007712Abstract: 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: ApplicationFiled: March 10, 2014Publication date: January 8, 2015Applicant: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, JR.
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Publication number: 20150007711Abstract: 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 further includes components that provide full auto firing capability. These components include a specially designed auto bracket that cooperates with a modified bolt carrier and a modified upper receiver.Type: ApplicationFiled: March 10, 2014Publication date: January 8, 2015Applicant: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, JR.
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Publication number: 20140230297Abstract: An AR-style firearm includes a specially designed lower receiver, a specially designed upper receiver mounted to the lower receiver, a pistol hand grip mounted to the lower receiver, a handguard mounted around a barrel, a specially designed magazine well formed in the lower receiver that is configured to receive an AK-47 magazine or similar magazine, and a specially designed, ambidextrous magazine release that holds and selectively releases the magazine from the magazine well.Type: ApplicationFiled: October 17, 2013Publication date: August 21, 2014Applicant: Rock River Arms, Inc.Inventors: Lester C. Larson, JR., Mark Larson
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Publication number: 20140157639Abstract: A handguard or other cover for a firearm includes a shell or body with a hollow interior cavity and a retaining structure configured to engage the forearm and retain the shell in place on the forearm, where the retaining structure is releasable to permit removal of the shell from the forearm. The shell may have a concave inner surface and a convex outer surface extending between the first and second edges. The concave inner surface may include at least one tab extending outwardly from the inner surface which is configured to be connected to a slot or opening formed in the forearm for the firearm.Type: ApplicationFiled: February 14, 2014Publication date: June 12, 2014Applicant: Rock River Arms, Inc.Inventor: Lester C. Larson, JR.
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Publication number: 20140075814Abstract: 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 further includes components that provide full auto firing capability. These components include a specially designed auto bracket that cooperates with a modified bolt carrier and a modified upper receiver.Type: ApplicationFiled: January 10, 2013Publication date: March 20, 2014Applicant: Rock River Arms, Inc.Inventor: Rock River Arms, Inc.
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Publication number: 20140075816Abstract: 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: ApplicationFiled: June 19, 2013Publication date: March 20, 2014Applicant: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, JR.
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Patent number: 8667883Abstract: 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: GrantFiled: June 19, 2013Date of Patent: March 11, 2014Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: 8667882Abstract: 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 further includes components that provide full auto firing capability. These components include a specially designed auto bracket that cooperates with a modified bolt carrier and a modified upper receiver.Type: GrantFiled: January 10, 2013Date of Patent: March 11, 2014Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: D699314Type: GrantFiled: August 23, 2012Date of Patent: February 11, 2014Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: D702309Type: GrantFiled: November 30, 2012Date of Patent: April 8, 2014Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: D702310Type: GrantFiled: November 30, 2012Date of Patent: April 8, 2014Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: D702801Type: GrantFiled: November 30, 2012Date of Patent: April 15, 2014Assignee: Rock River Arms, Inc.Inventors: Mark Larson, Lester Larson, Jr.
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Patent number: D733828Type: GrantFiled: January 10, 2014Date of Patent: July 7, 2015Assignee: Rock River Arms, Inc.Inventor: Lester C. Larson, Jr.
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Patent number: D740387Type: GrantFiled: June 27, 2014Date of Patent: October 6, 2015Assignee: Rock River Arms, Inc.Inventor: Lester C. Larson, Jr.
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Patent number: D740909Type: GrantFiled: June 27, 2014Date of Patent: October 13, 2015Assignee: Rock River Arms, Inc.Inventor: Lester C. Larson, Jr.