The DS-123 Defender Series™ Accu-Guard™ Laser Sight by Crimson Trace fits Springfield Armory XD, XD Mod.2 and XD(M) pistols. The Defender Series sets a new standard for a Springfield XD laser sight by providing cutting edge design, superior technology, and an affordable price tag. The DS-123 features Beam Lock™ Adjustments so that the user can easily adjust laser sighting for both windage and elevation, and the unit is pre-sighted at the factory at 50 ft. The Dual Side N-Gage™ Activation Buttons provide a large, easy-to-find, bright red activation button, which emits a powerful (5mW peak, 620-670nm, Class 3R) red aiming laser. Does NOT fit Tactical 5" & Service 4" with single rail notch.