For avid shooters, the Sightmark Core Shot A-Spec FMS Reflex Sight brings precision accuracy and reliability to high-stakes competition shooting and hunts of a lifetime. Designed to deliver better optic performance, the shooters A-Spec FMS Reflex Sight improves accuracy for recreational, professional and competitive environments. The Core Shot bridges the gap between the Mini Shot and Ultra Shot for avid shooters wanting a compact sight. Made out of aircraft-grade aluminum for a dependable compact lightweight housing and includes external battery compartment for easier access to the battery. The Core Shot Includes a riser mount to work effectively on ARs. This model features 8 Daytime reticle brightness levels with 2 Night Vision settings with a 1 hour Auto Shutoff. IP55 water resistant.