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US 9,921,022 B1Granted
Firearm with gas-assist recoil operation system
OwnerMichael Noyce Merinoinventor
Life of this patent
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Abstract
A firearm comprising a barrel assembly, forward receiver, and receiver brake. The barrel assembly comprises a barrel, compression spring, gas tube, and front and rear bushings. The gas tube is situated around the barrel between the front and rear bushings and is not attached to the barrel. The compression spring is situated around the barrel between the front and rear bushings and inside of the gas tube. The front and rear bushings are fixedly attached to the forward receiver. The barrel comprises a gas port that is covered by a gas regulator and is in fluid communication with a gas chamber situated between the front bushing and the gas regulator, which is fixedly attached to the barrel. The receiver brake is fixedly attached to the forward receiver on its distal end.
Claims16
A firearm comprising a barrel assembly, a forward receiver, and a receiver brake;
- wherein the barrel assembly is located inside of the forward receiver;
- wherein the barrel assembly comprises a barrel, a compression spring, a gas tube, a front bushing, and a rear bushing;
- wherein the gas tube is situated around the barrel between the front and rear bushings and is not attached to the barrel;
- wherein the compression spring is situated around the barrel between the front and rear bushings and inside of the gas tube;
- wherein both the front and rear bushings are fixedly attached to the forward receiver;
- wherein the barrel comprises a gas port;
- wherein the gas port is covered by a gas regulator and is in fluid communication with a gas chamber;
- wherein the gas chamber is situated between the front bushing and the gas regulator;
- wherein the gas regulator is fixedly attached to the barrel;
- wherein the barrel has a circumference, and the gas regulator extends around the entire circumference of the barrel and is surrounded by the gas tube;
- wherein the gas tube terminates in the front bushing;
- and
- wherein the receiver brake is fixedly attached to the forward receiver on a distal end of the forward receiver, the receiver brake comprising one or more interior baffles extending laterally across a width of the receiver brake, each of the baffles having a central bore that is configured to allow passage of a projectile through the central bore after the projectile exits a distal end of the barrel.
10 more elements
A firearm comprising a barrel assembly, a forward receiver, and a receiver brake;
- wherein the barrel assembly is located inside of the forward receiver;
- wherein the barrel assembly comprises a barrel, a rear bushing that is affixed to the forward receiver, a compression spring, a combined gas regulator and gas tube, and an extended barrel bushing tube with a forward flange;
- wherein the receiver brake abuts up against a distal surface of the forward flange of the extended barrel bushing tube;
- wherein the compression spring surrounds the barrel and is situated around the outside of the combined gas regulator and gas tube;
- wherein a distal end of the compression spring abuts up against a forward flange of the combined gas regulator and gas tube;
- wherein the combined gas regulator and gas tube extends from the forward flange of the combined gas regulator and gas tube to a center of the barrel;
- wherein a proximal end of the combined gas regulator and gas tube covers a gas port that is configured to provide a fluid communication between a bore in the barrel and a gas chamber;
- wherein the forward flange of the combined gas regulator and gas tube is situated against the forward flange of the extended barrel bushing tube;
- wherein the forward flange of the extended barrel bushing tube is affixed to the forward receiver at a muzzle end of the barrel;
- wherein the barrel is fixedly attached to the combined gas regulator and gas tube at a proximal end of the combined gas regulator and gas tube;
- and
- wherein the receiver brake is fixedly attached to the forward receiver on a distal end of the forward receiver, the receiver brake comprising one or more interior baffles extending laterally across a width of the receiver brake, each of the baffles having a central bore that is configured to allow passage of a projectile through the central bore after the projectile exits a distal end of the barrel.
9 more elements
A firearm comprising a barrel assembly, a forward receiver, and a receiver brake;
- wherein the barrel assembly is located inside of the forward receiver;
- wherein the barrel assembly comprises a barrel, an extension spring, a combined gas regulator and gas tube, and an extended barrel bushing tube;
- wherein the extended barrel bushing tube is affixed to the forward receiver;
- wherein the extension spring lies between a rear flange of the combined gas regulator and gas tube and a forward flange of the extended barrel bushing tube;
- wherein the receiver brake abuts up against a distal surface of the forward flange of the extended barrel bushing tube;
- wherein a proximal end of the extension spring abuts up against and is affixed to the rear flange of the combined gas regulator and gas tube;
- wherein a distal end of the extension spring abuts up against and is affixed to the forward flange of the extended barrel bushing tube;
- wherein the rear flange of the combined gas regulator and gas tube is fixedly attached to the barrel;
- wherein the forward flange of the extended barrel bushing tube is affixed to the forward receiver;
- and
- wherein the receiver brake is fixedly attached to the forward receiver on a distal end of the forward receiver, the receiver brake comprising one or more interior baffles extending laterally across a width of the receiver brake, each of the baffles having a central bore that is configured to allow passage of a projectile through the central bore after the projectile exits a distal end of the barrel.
8 more elements
A firearm comprising a barrel assembly, a forward receiver, and a receiver brake;
- wherein the barrel assembly is located inside of the forward receiver;
- wherein the barrel assembly comprises two compression springs, a rear bushing, an external gas cylinder, and a piston rod;
- wherein the rear bushing is affixed to the forward receiver;
- wherein the external gas cylinder is secured to the barrel;
- wherein the two compression springs are situated external to the barrel without encircling it;
- wherein a proximal end of each of the two compression springs abuts up against the rear bushing;
- wherein a proximal end of the piston rod forms a gas chamber;
- wherein the barrel comprises a gas port that is in fluid communication with the gas chamber;
- and
- wherein the receiver brake is fixedly attached to the forward receiver on a distal end of the forward receiver, the receiver brake comprising one or more interior baffles extending laterally across a width of the receiver brake, each of the baffles having a central bore that is configured to allow passage of a projectile through the central bore after the projectile exits a distal end of the barrel.
7 more elements
Dependencies are inferred from the claim text.