Springfield Armory XDS5901M Backstrap Sleeve made of Polymer with Black Finish & 1 Piece Design for 9mm Luger Springfield XD-S with #1 Backstrap & 3.30"-4" Barrel

Backstrap sleeve slides down over the top of the magazine and fills the gap between the bottom of the grip frame and the base of the magazine. This mid-sized sleeve for backstrap 1 is for your Springfield XD-S with a 3.3"-4" barrel chambered in 9mm.