Your ultra-compact optic for hair-splitting accuracy is a Sightmark® Mini Shot Pro Spec Reflex Sight. The illuminated 5 MOA dot reticle with 5 brightness settings is clearly visible through the dual-pane glass lens with scratch-resistant coating. Unlimited eye relief maintains peripheral vision and depth perception to increase target acquisition, and makes this a perfect mount for shotgun, rifle or handgun. A durable aluminum housing and protective hood handles recoil up to 1,000G's. The external battery compartment eliminates the need to rezero the sight after battery replacement.