The ornamental design for a firearmnoisesuppressor, substantially as shown and described.
FIG. 1 is a perspective view of the firearm noise suppressor showing my new design;
FIG. 2 is a side elevation view thereof, with the opposite side being a mirror image of the side elevation view shown in FIG. 2;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a top plan view thereof.
The short dashed broken line showing of environment and the short dash long dash short dash broken lines included for the purpose of illustrating order of assembly form no part of the claimed design.