Optex Systems Holdings, Inc. is a manufacturer of optical sighting systems and assemblies, primarily for department of defense applications. Its products are installed on various types of United States military land vehicles, such as the Abrams and Bradley fighting vehicles, light armored and armored security vehicles and the Stryker family of vehicles, as well as light armored and armored security vehicles. Its segments are Optex Systems and Applied Optics Center. It also manufactures and delivers numerous periscope configurations, rifle and surveillance sights and night vision optical assemblies. It delivers its products both directly to the federal government and to prime contractors. Its products consist primarily of build-to-customer print products. Its product line includes periscopes, sighting systems, howitzers, other and applied optics center. It also offers Speedtracker, a cutting-edge chronograph designed to measure projectile velocity. Its subsidiary is Optex Systems, Inc.