The ornamental design for a slingadapter, as shown and described.
FIG. 1 is a top, front, right perspective view of a sling adapter showing our new design attached to a firearm;
FIG. 2 is a top, front, right perspective view of the sling adapter of FIG. 1, with the sling loop pivoted over the top of the sling adapter body;
FIG. 3 is a top plan view of the sling adapter of FIG. 1, with the sling loop pivoted over the top of the sling adapter body;
FIG. 4 is a front elevation view of the sling adapter of FIG. 1, with the sling loop pivoted over the top of the sling adapter body, the rear elevation view being a mirror image thereof;
FIG. 5 is a right side elevation view of the sling adapter of FIG. 1, with the sling loop pivoted over the top of the sling adapter body, left side elevation view being a mirror image thereof; and,
FIG. 6 is a bottom plan view of the sling adapter of FIG. 1, with the sling loop pivoted over the top of the sling adapter body of FIG. 1.
The broken lines showing portions of the design in all figures are included for the purpose of illustrating environment and unclaimed features and form no part of the claimed design.