The ornamental design for a heptagonalfirearmsuppressor, as shown and described herein.
FIG. 1 is a perspective view of the heptagonal firearm suppressor in accordance with my invention;
FIG. 2 is an end view thereof, taken from the left side of FIG. 1;
FIG. 3 is an end view thereof, taken from the right side of FIG. 1;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
Broken lines shown in FIGS. 1-7 are for illustrative purposes only and form no part of the claimed design. The surface indicia of parallel lines also form no part of the claimed design and are merely surface shading.