FIG. 1 is a front isometric view of a first embodiment of a muzzle brake according to my design;
FIG. 2 is a rear isometric view thereof;
FIG. 3 is a right side elevation view thereof, the left side elevation view being a mirror image;
FIG. 4 is a right side elevation view thereof rotated 30° about the longitudinal axis of the muzzle brake with respect to FIG. 3, the left side elevation view being a mirror image;
FIG. 5 is a front elevation view thereof;
FIG. 6 is a rear elevation view thereof;
FIG. 7 is a front isometric view of a second embodiment of a muzzle brake;
FIG. 8 is a rear isometric view thereof;
FIG. 9 is a right side elevation view thereof, the left side elevation view being a mirror image;
FIG. 10 is a right side elevation view thereof rotated 30° about the longitudinal axis of the muzzle brake with respect to FIG. 9, the left side elevation view being a mirror image;
FIG. 11 is a front elevation view thereof; and,
FIG. 12 is a rear elevation view thereof.
The broken lines illustrate portions of the muzzle brake that form no part of the claimed design.