Vortex VRD-6 Viper 6 MOA Red DotThe Viper red dot’s super low mounting height makes it the perfect solution for handguns with cutout slides. Offers the simplicity and speed advantage of a red dot, while co-witnessing with suppressor-height iron sights. Battery Life: Up to 150 hours on highest setting. Up to 30,000 hours on lower settings. Included in the BoxWeaver / Picatinny mountT-10 Torx wrenchCR 2032 batteryLens clothFlathead wrenchProtective cover Vortex Viper 6 MOA Red Dot VRD-6