US12313367 - Adjustable gas block with front adjustment access for firearm direct-impingement gas system

The patent describes an adjustable gas block system for firearms that allows for the regulation of gas flow through a rotatable annular gas regulator, which can be adjusted to change the diameter of gas port holes. This system is designed to be securely clamped to the barrel using set screws and features a unique design that prevents unwanted rotation of the gas regulator during operation.

Claim 1

1. An adjustable gas system for a firearm, comprising: a one-piece gas block body configured to be fixed to a barrel of the firearm, the gas block body further comprising a gas block body bulge and a ring, the gas block body bulge being at one end of a barrel receiving cavity of the gas block body, the ring being at an opposite end of the barrel receiving cavity of the gas block body, the gas block body also comprising a gas tube through hole and a gas through hole that traverses the gas tube through hole and the barrel receiving cavity to allow gas to pass therethrough from the barrel of the firearm to the gas tube through hole, the gas tube through hole configured to receive a gas tube of the firearm, the gas block body configured to be clamped to the barrel of the firearm by: one or more set screws, and direct physical contact of the gas block body bulge and the ring with the barrel of the firearm; an annular gas regulator which, when installed on the barrel of the firearm, is configured to partially surround the barrel of the firearm such that the gas regulator is rotatable around the barrel from a first position to a second position, wherein the annular gas regulator comprises a plurality of gas port through holes, each having a different diameter, and a plurality of allocation holes, wherein one of the plurality of gas port through holes enables a first amount of gas to flow from the barrel of the firearm to the gas tube of the firearm when the annular gas regulator is in the first position, wherein another one of the plurality of gas port through holes enables a second amount of gas to flow from the barrel of the firearm to the gas tube of the firearm when the annular gas regulator is in the second position, wherein each of the plurality of allocation holes corresponds to a respective one of the plurality of gas port through holes, wherein the allocation holes interact with a plunger installed on the gas block body, wherein the plunger is retained in the gas block body by the gas regulator, wherein, when installed on the barrel of the firearm, the gas regulator is retained inside the barrel receiving cavity of the gas block body, thereby preventing the gas regulator from rotating to a position where a clearance channel of the gas regulator is lined up with the gas block body bulge, and wherein the one or more set screws comprise a front set screw and a back set screw, wherein, when the front set screw is removed from the gas block body, the gas regulator is removable from the gas block body, while the back set screw keeps the gas block body secured to the barrel. a one-piece gas block body configured to be fixed to a barrel of the firearm, the gas block body further comprising a gas block body bulge and a ring, the gas block body bulge being at one end of a barrel receiving cavity of the gas block body, the ring being at an opposite end of the barrel receiving cavity of the gas block body, the gas block body also comprising a gas tube through hole and a gas through hole that traverses the gas tube through hole and the barrel receiving cavity to allow gas to pass therethrough from the barrel of the firearm to the gas tube through hole, the gas tube through hole configured to receive a gas tube of the firearm, the gas block body configured to be clamped to the barrel of the firearm by: one or more set screws, and direct physical contact of the gas block body bulge and the ring with the barrel of the firearm; one or more set screws, and direct physical contact of the gas block body bulge and the ring with the barrel of the firearm; an annular gas regulator which, when installed on the barrel of the firearm, is configured to partially surround the barrel of the firearm such that the gas regulator is rotatable around the barrel from a first position to a second position, wherein the annular gas regulator comprises a plurality of gas port through holes, each having a different diameter, and a plurality of allocation holes, wherein one of the plurality of gas port through holes enables a first amount of gas to flow from the barrel of the firearm to the gas tube of the firearm when the annular gas regulator is in the first position, wherein another one of the plurality of gas port through holes enables a second amount of gas to flow from the barrel of the firearm to the gas tube of the firearm when the annular gas regulator is in the second position, wherein each of the plurality of allocation holes corresponds to a respective one of the plurality of gas port through holes, wherein the allocation holes interact with a plunger installed on the gas block body, wherein the plunger is retained in the gas block body by the gas regulator, wherein, when installed on the barrel of the firearm, the gas regulator is retained inside the barrel receiving cavity of the gas block body, thereby preventing the gas regulator from rotating to a position where a clearance channel of the gas regulator is lined up with the gas block body bulge, and wherein the one or more set screws comprise a front set screw and a back set screw, wherein, when the front set screw is removed from the gas block body, the gas regulator is removable from the gas block body, while the back set screw keeps the gas block body secured to the barrel.

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