For your avid shooters who like to be out on the range the Sightmark Core Shot A-Spec FMF Reflex Sight stimulates precision accuracy and reliability in high-stakes competition shooting and hunts of a lifetime. Designed to deliver elite optic performance A-Spec FMS Reflex Sight guarantees precision for all recreational professional and competitive environments. The Core Shot bridges the gap between the Mini Shot and Ultra Shot for all customers wanting a compact sight. It is made out of aircraft-grade 6061-T6 aluminum for a dependable compact lightweight housing. The sight includes windage and elevation click adjustments to dial in quickly and an external battery compartment for easier access to the battery. Includes a riser mount to work effectively on ARs.Features:Compact lightweight aluminum alloy housingProtective aluminum shieldLocking quick detach Picatinny mountWide lens provides quick target acquisitionSlotted windage and elevation adjustmentsRed reticle illumination10 yd infinity parallax settingUnlimited eye reliefOff 0 - 8 NV 1 - 2 reticle brightness settingIP55 water-resistant4 feet shockproof20 to 1400 hr battery life