US 12,292,251 B2
Adjustable gas block for firearm
Matthew Blake Gangl, Falcon Heights, MN (US)
Assigned to J.P. Enterprises, Inc., Hugo, MN (US)
Filed by J.P. Enterprises, Inc., Hugo, MN (US)
Filed on Feb. 23, 2024, as Appl. No. 18/585,641.
Claims priority of provisional application 63/447,782, filed on Feb. 23, 2023.
Prior Publication US 2024/0288237 A1, Aug. 29, 2024
Int. Cl. F41A 5/28 (2006.01)
CPC F41A 5/28 (2013.01) 14 Claims
OG exemplary drawing
 
1. An adjustable gas block for a firearm, comprising:
a housing adapted to be attached to a barrel of the firearm,
the housing having a first passageway adapted to be aligned with a gas port in a barrel of the firearm and a second passageway adapted to receive a gas tube of the firearm, such that a bore of the barrel, the gas port of the barrel, the first passageway, and the gas tube are in fluid communication,
a valve member mounted in the housing for forward and rearward sliding movement and having a first portion and a second portion, the first portion having an upwardly facing surface having a radius of curvature that closely approximates a radius of curvature of an outer diameter of the gas tube, the second portion having threads, and
a nut mounted to the housing for rotational movement and having threads mating with the threads on the second portion of the valve member,
whereby rotating the nut in a first direction translates the valve member forwardly and rotating the nut in a second opposite direction translates the valve member rearwardly, the axial position of the first portion of the valve member controlling the amount of gas passing from the first passageway to the gas tube by completely opening, partially opening, or completely closing the first passageway.
 
13. An adjustable gas block for a firearm, comprising:
a housing adapted to be attached to a barrel of the firearm,
the housing having a first passageway adapted to be aligned with a gas port in a barrel of the firearm and a second passageway adapted to receive a gas tube of the firearm, such that a bore of the barrel, the gas port of the barrel, the first passageway, and the gas tube are in fluid communication,
a valve member mounted in the housing for forward and rearward sliding movement and having a first portion and a second portion, the second portion having threads, and
a nut mounted to the housing for rotational movement and having threads mating with the threads on the second portion of the valve member,
whereby rotating the nut in a first direction translates the valve member forwardly and rotating the nut in a second opposite direction translates the valve member rearwardly, the axial position of the first portion of the valve member controlling the amount of gas passing from the first passageway to the gas tube by completely opening, partially opening, or completely closing the first passageway,
wherein the first portion of the valve member is configured such that an axis of rotation of the nut and a longitudinal axis of the gas tube are spaced apart by an amount less than one half of the sum of an outer diameter of the gas tube and an outer diameter of the forward portion of the valve member.