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Firearm Having Gas Piston System

  • US 20110271827A1
  • Filed: 05/06/2011
  • Published: 11/10/2011
  • Est. Priority Date: 05/06/2010
  • Status: Active Grant
First Claim
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1. A firearm having a gas piston system, the firearm comprising:

  • a lower receiver,an upper receiver mounted to the lower receiver,a barrel mounted to the upper receiver,a handguard surrounding at least part of the barrel,an elongated mounting rail positioned above and mounted to the upper receiver,a gas piston housing mounted to the elongated rail and positioned forward of the upper receiver,a piston and rod assembly operatively mounted to the gas piston housing and above the barrel, the piston and rod assembly operatively connected to a bolt carrier disposed in the upper receiver,an ambidextrous charging handle mounted to the elongated rail and above the hand guard forward of the upper receiver and operatively connected to the bolt carrier, andan elongated tube mounted within the upper receiver and connected to the bolt carrier, the elongated tube configured to receive the rod and a coiled spring, the elongated tube defining a tube end that functions as a contact point for the piston during cycling of the firearm;

    wherein the elongated mounting rail extends above and across and mounts and aligns the gas piston housing, upper receiver, charging handle, bolt carrier, and piston and rod assembly.

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