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US 8,261,653 B2Granted
Firearm having a new gas operating system
OwnerRichard Vance Crommettinventor
Life of this patent
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Abstract
M-16/AR-15 firearms modified with a new gas operating system are described. The modification of the firearm with the new gas operating system has a forward mounted gas and recoil spring system in which high pressure propellant gases from the cartridge expand in the barrel and operate the firearm.
Claims40
A firearm comprising:
- a barrel;
- a gas barrel port fluidly coupled with the barrel;
- a gas jet block fluidly coupled with the barrel gas port, the gas jet block comprising a gas operation tube docking port and a gas jet in the gas operation tube docking port to meter gas flow from the barrel;
- a gas operation tube fluidly engaged with the gas jet and axially translatable within the docking port;
- a bolt carrier assembly comprising a carrier and a bolt, the gas operation tube fixedly connected to the carrier and fluidly coupled with the bolt carrier assembly, the bolt carrier assembly movable to axially translate the gas operation tube within the docking port to disengage the gas operation tube from the gas jet as a function of gas pressure in the bolt carrier assembly, the gas jet venting gas from the gas jet block when the gas operation tube disengages from the gas jet;
- and
- a spring positioned with respect to the gas operation tube to cause the tube to reengage the gas operation tube with the gas jet.
4 more elements
A firearm comprising:
- a barrel;
- a receiver fixed to the barrel;
- a bolt carrier assembly in the receiver and comprising a carrier and a bolt in-line with the barrel, the carrier movable relative to the bolt;
- a gas jet block connected to the barrel and comprising a gas operation tube docking port and a gas jet in the gas operation tube docking port;
- a slideable gas operation tube fixed to the carrier and axially translatable within the docking port, wherein gas is directed from the barrel through the gas jet and into the gas operation tube, the gas operation tube to direct the gas to the bolt carrier assembly to move the carrier relative to the bolt as a function of gas pressure in the bolt carrier assembly and to cause the gas jet to vent excess gas from the barrel when the gas operation tube axially translates within the docking port;
- and
- a spring positioned with respect to the gas operation tube to move the gas operation tube when a spring force of the spring overcomes the gas pressure in and on the bolt carrier assembly.
4 more elements
Dependencies are inferred from the claim text.