Product DescriptionThe Sightmark Core Shot ASpec FMS Reflex Sight is built for precision, speed, and durability. Bridging the gap between Sightmark&';s Mini Shot and Ultra Shot families, this compact optic delivers rapid target acquisition through a wide 28x18 mm window and an unlimited eye relief. Its aircraftgrade 6061T6 aluminum housing with a protective shield and IP55 water resistance stands up to demanding environments, while a side, external battery compartment allows quick battery changes. A fixed Picatinny mount with included riser makes it ideal for ARplatform rifles. The 5 MOA red dot is LEDilluminated with 8 daytime and 2 nightvision compatible brightness settings and features a 1hour auto shutoff to preserve battery life.Product Highlights Compact, lightweight 6061T6 aluminum housing with protective shield Wide 28x18 mm objective window for fast target acquisition and clear sight picture 5 MOA LEDilluminated red dot with 8 daytime + 2 NV brightness settings External CR2032 battery compartment and 1hour auto shutoff Fixed Picatinny mount with riser included; shockproof and IP55 water resistant Specs Magnification: 1x Objective window: 28 x 18 mm Reticle: 5 MOA red dot; illumination type: LED Brightness settings: 8 daytime + 2 night vision Eye relief: Unlimited Windage/Elevation adjustment range: 100 MOA; click value: 1 MOA Parallax setting: 10 yds Optical coating: AR Red Emitter type: Open Construction: 6061T6 aluminum; finish: Matte black Water resistance: IP55; Shockproof: Yes (approx. 4 ft / 1.2 m) Mount type: Picatinny; attachment type: Picatinny Battery: CR2032 (external compartment) Dimensions (L x W x H): 2.3 x 1.2 x 2.2 in Weight: 4.4 oz UPC: 812495024948 MPN: SM26017 Brand: Sightmark Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.