Spiked muzzle brake for firearm

FIG. 1 is a top perspective view of a spiked muzzle brake for a firearm showing my design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a rear view thereof.

The area inside the broken boundary lines of FIGS. 1, 2, 7 and 8 form no part of the claimed design.