A complete Springfield Armory XD OSP slide assembly with a 4-inch barrel and recoil system included, cut for optics from the factory. OSP stands for Optical Sight Pursuit, Springfield's designation for its red-dot-ready slides, and buying the assembly complete means you are not sourcing a barrel and recoil spring separately or fitting parts.

This is the practical route to converting an existing XD to an optics-ready configuration, or to building a spare upper for a pistol you already run. Factory parts, factory fit.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.