The FN® PS90® / P90® M1913 USG Accessory Picatinny Rail is a drop-in replacement rail designed to replace the factory standard so you can mount your favorite optics. This MIL-SPEC-1913 Picatinny rail lets you easily add an optic, weapon light, or laser to your PS90 or P90 so you can customize it to your specific needs. Featuring plenty of rail space, this Picatinny rail gives you plenty of room for your weapon-mounted accessories so you can mix and match however you like. What are you waiting for? Order now!