The AT3 LEOST (Laser Enabled Optic System) is Accurate, Versatile, Reliable, & Packed with Features. The Ultimate Red Dot System that won’t break the bank. Crisp 2 MOA red dot. Brilliant green targeting laser with W/E adjustment. Integrated riser mount housing. 50K hour max battery life. Flip up lens caps. Tool-free windage & elevation adjustments. The AT3 LEOST is ideal for home defense, tactical & law enforcement, hunting, plinking, competitive shooting, or any shooting scenario where magnification is not required. Perfect for sporting & hunting rifles, shotguns, air rifles, and any other weapon with a picatinny or weaver mounting rail. Crisp 2 MOA red dot with 6 brightness settings for accurate both-eyes-open shooting. Brilliant green laser enables rapid targeting – perfect for home defense, tight quarters, & low visibility. Crystal-clear fogproof multi-coated optics resist scratches and provide clarity in all situations. Unfailingly maintains zero – even with high-caliber weapons. Precise digital controls for simple control of the sight and integrated laser – switch between red dot only, red dot + laser, and laser only modes with the push of a button. Integrated riser mount puts sight at optimal eye level, and provides lower 1/3 cowitness with iron sights (compatible with all iron sight setups including fixed sights). Tool-free windage and elevation adjustment with integrated screwdriver on W/E caps. Spring-assisted flip-up lens caps provide rapid deployment and superb lens protection. Durable 6061 Aircraft-Aluminum housing with a stealthy matte-black hardcoat anodized finish. Fully waterproof and fogproof – sealed design with nitrogen purged optics. Extra-long battery life – up to 50,000 hours on lowest brightness setting (red dot only); up to 8 hours of continuous laser use. Shockproof circuitry rated for impacts up to 800 G’s – it can handle any recoil you throw at it. Uses commonly available CR123 lithium batteries – SurefireT CR123A included. Easy thumb screw for secure mounting to any picatinny rail (can tighten by hand, or with a coin or flathead screwdriver). Reticle: 2 MOA Red Dot. Mount height: 1.58 from rail to center of sight tube (Lower 1/3 cowitness with iron sights). Battery life: up to 50,000 hours on lowest setting; up to 40 hours of continuous laser use. Battery Type: CR123A (1 pc) – Surefire 1550 mAH CR123A included. Weight: 8.3 oz. Mounting Length: 1.1 inch / 28 mm. Total Length/Width/Height: 4.3 in / 2.3 in / 3.1 in. Adj Range: +/- 50 MOA (total adjustment range 100 MOA). Parallax Free: 25 yds. Field of View: Unlimited. Night Vision Compatible: No. Laser Wavelength – 532nm. Finish: Matte black anodized. Inside of the box. LEOST Red dot sight.