SightMark SM26040: Sightmark\'s innovative Element 1x30 is a 2 MOA red dot sight, perfect for both-eyes-open shooting on AR rifles and shotguns. It features a practical, Picatinny-compatible clamp mount to reduce bulk and create a sleek, streamlined design. The Element\'s windage/elevation caps can be flipped and used as tools for making adjustments. The design of the sight also naturally protects these adjustment caps with raised edges. It has 10 brightness settings (including off) and two night vision settings. A rugged and compact 6061-T6 aluminum alloy housing keeps the Element 1\" shorter than many red dots and provides increased durability in the field. This versatile red dot is not only NV-compatible, it also works in conjunction with magnifiers to help shooters at further distances. Waterproof up to 3 ft. and shockproof up to 3 ft. on concrete, the Element provides anywhere from 100-15,000 hours of battery life from one CR2032 depending on the brightness setting in use. The Element 1x30 Red Dot includes flip-up lens covers, CR2032 battery and manual.