Patent ID: 8863637

Claim:
A gas valve assembly for use with an autoloading firearm, the assembly comprising: a gas valve having an annular body around a longitudinal gas valve axis, said gas valve having an inner surface defining a gas chamber and first and second annular end surfaces defining first and second openings of said gas chamber, the gas valve further having an outer surface and at least one gas channel extending between the inner surface and the outer surface providing a gas communication path from the outer surface to the gas chamber, wherein said at least one gas channel has a gas channel axis; a main regulator having a helical body, a generally-conical first end, and a generally-conical second end opposite the helical body from the first end, the main regulator occupying a portion of the chamber to define an operating volume, the main regulator having at least one outer diameter corresponding to an inner diameter of the gas chamber; and a first auxiliary regulator having a body, a conical surface forming a recess in the body, and a plurality of cylindrical surfaces defining channels through the cap in a direction parallel to said gas valve axis, wherein said conical surface is in contact with the first end of said main regulator.