US 12,259,208 B2
Adjustable gas valve for firearm
Daniel Earl Fisher, Fredericksburg, TX (US); and Christian Kager Welch, Fredericksburg, TX (US)
Assigned to KNS Precision, Inc., Fredericksburg, TX (US)
Filed by KNS Precision, Inc., Fredericksburg, TX (US)
Filed on Jan. 17, 2023, as Appl. No. 18/155,110.
Claims priority of provisional application 63/299,587, filed on Jan. 14, 2022.
Prior Publication US 2023/0228507 A1, Jul. 20, 2023
Int. Cl. F41A 5/28 (2006.01)
CPC F41A 5/28 (2013.01) 14 Claims
OG exemplary drawing
 
1. An adjustable gas valve for use in a firearm gas block having a cylinder and piston in the gas block, the valve comprising:
a valve body configured to associate with the cylinder and having an exhaust port, the valve body including a plurality of inlet orifices rotatably alignable to selectively receive gas pressure flow from a barrel port;
a regulator that adjustably occludes between none and all of the exhaust port, and
an internal diffuser stem configured to extend at least partially inside the valve body, the internal diffuser stem having an open end directed toward the piston, a plurality of radial exhaust outlets leading to an annular chamber positioned adjacent the exhaust port, and a central exhaust passageway operably connecting the open end with the radial exhaust outlets.