The Vortex Strikefire II 1 x 30 Red Dot Rifle Scope features fully multicoated, antireflective optics for maximum light transmission and optimal brightness and unlimited eye relief for rapid target acquisition. A 4 MOA red/green dot reticle has 10 illumination levels, including night vision compatible, and the scope is O-ring sealed and nitrogen purged for waterproof, fogproof and shockproof protection. Adjustable windage and elevation with audible clicks. Cantilever ring mount. Includes a CR 2 lithium battery. Flip-cap optic covers.