Not great, not bad - OpticsPlanet Exclusive Elcan SpecterDR Dual Role 1-4x32mm Rifle Scope

Eye relief is too tight. There is a weird refraction on the left side of the field of view. It doesn’t really hurt the performance like the tight eye relief though. If you’re wearing a helmet, the housing will bump against the front of your helmet since the eye relief is so tight. Also your rear sight will break off if you use this with your helmet often. Glass quality is ok, not great, not terrible. Best thing about this is overall construction quality and the reticle design. The 1 OR 4x option is innovative and a cool feature. I like the integrated back up iron sights on the top of the housing. Good engineering and concept, a little rough execution, most of that coming from too tight of eye relief/box and the not so great, not so bad glass.