The ornamental design for a buttpad for firearm with accessory rail, as shown and described.
FIG. 1 is a right side elevation view of a butt pad for firearm with accessory rail attached to a butt stock of a rifle showing my new design;
FIG. 2 is a rear, bottom, right side perspective view of the butt pad for firearm with accessory rail of FIG. 1;
FIG. 3 is a right side elevation view of the butt pad for firearm with accessory rail of FIG. 1; the left side elevation view is a mirror image of FIG. 3;
FIG. 4 is a top plan view of the butt pad for firearm with accessory rail of FIG. 1;
FIG. 5 is a bottom plan view of the butt pad for firearm with accessory rail of FIG. 1;
FIG. 6 is a rear elevation view of the butt pad for firearm with accessory rail of FIG. 1; and,
FIG. 7 is a front elevation view of the butt pad for firearm with accessory rail of FIG. 1.
The broken lines showing portions of the design in all figures is included for the purpose of illustrating environment or unclaimed features and forms not part of the claimed design.