STEINER OTAL-C IR LASER SIGHT. STILL IN THE FACTORY BOX AND SEALED. I BOUGHT TWO AND I PUT ONE ON MY AR-15. THIS IS IR MEANING YOU NEED NIGHT VISION TO SEE THE LASER. THE ONE ON MY AR IS PERFECT FOR SHOOTING HOGS OR YOTS AT NIGHT! IT COMES WITH QUICK DETACH PICATINNY MOUNT.