I claim the ornamental design for a pistol grip safety, as shown and described.
FIG. 1 is an isometric view of a pistol grip safety according to the invention shown within a broken line environment of use attached to a pistol;
FIG. 2 is an isometric view of the pistol grip safety shown in FIG. 1;
FIG. 3 is a right side view of the pistol grip safety shown in FIG. 1;
FIG. 4 is a rear view of the pistol grip safety shown in FIG. 1;
FIG. 5 is a front view of the pistol grip safety shown in FIG. 1;
FIG. 6 is a top view of the pistol grip safety shown in FIG. 1; and,
FIG. 7 is a bottom view of the pistol grip safety shown in FIG. 1.
The dotted lines showing a pistol in FIG. 1 are included for the purpose of illustrating environmental structure; the dotted lines showing portions of the pistol grip safety in FIGS. 2-7 are included for the purpose of illustrating portions of the article; the dot dash broken lines shown in the figures illustrate the boundary of the claimed design; all broken lines form no part of the claimed design.