1x magnification allows both-eyes-open shooting, for enhanced awareness and target acquisition; Compact and lightweight, so it won't affect firearm balance or handling; Parallax-free, for better accuracy; Mounts to almost anything - including handguns, rifles, and shotguns - using Burris mounting systems; Automatic brightness sensor adjusts brightness to match the environmental conditions; also features 3 manual brightness settings; Windage and elevation adjustments make optic fine-tuning easy; no special tool required; Index-matched, Hi-Lume multicoating provides low-light performance and glare elimination; Shockproof design stands up to years of punishing recoil; FastFire 3-MOA Dot reticle; Includes Picatinny mount for mounting on rifles, handguns, and tactical shotguns