The ornamental design for a slide for a semiautomaticfirearm, as shown and described.
FIG. 1 is a perspective view of the slide for a semiautomatic firearm;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a right hand side thereof;
FIG. 5 is a left hand side thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a perspective view of the slide as mounted on a gun frame.
The broken lines showing additional features of the slide for a semiautomatic firearm are for illustrative purposes only and form no part of the claimed design.