Vortex Venom Red Dot Top Load (VT-VMD-3103)Make your AR, pistol, or shotgun even more poisonous with the Venom Red Dot sight. A 3 MOA dot promotes rapid target acquisition, while providing a precise point of aimgetting shots down range and on target fast. The durable, machined aluminum housing ensures the unit will stand up to whatever you throw at it. High quality, fully multi coated lens offers a clean, wide field of view. Our top load system makes changing the CR 1632 battery a snap and