The ornamental design for a rearsight mount for large caliber firearms, substantially as shown and described.
FIG. 1 is a perspective view of a rear portion a large caliber firearm equipped with a rear sight mount for large caliber firearms according the present invention;
FIG. 2 is an elevation view of a front side of the rear sight mount for large caliber firearms shown in FIG. 1 removed from the firearm environment;
FIG. 3 is an elevation view of a left side of the rear sight mount for large caliber firearms shown in FIG. 1;
FIG. 4 is a top plan view of the rear sight mount for large caliber firearms shown in FIG. 1;
FIG. 5 is an elevation view of a rear side of the rear sight mount for large caliber firearms shown in FIG. 1;
FIG. 6 is an elevation view of a right side of the rear sight mount for large caliber firearms shown in FIG. 1; and,
FIG. 7 is a bottom plan view of the rear sight mount for large caliber firearms shown in FIG. 1.
The broken lines are for illustrative purposes and represent environmental structure and unclaimed portions of the rear sight mount for large caliber firearms and therefore form no part of the claimed design.