CROSMAN 32mm Open Reflex Sight

CenterPoint Optics open reflex sight 32mm objective lens 4 reticles, each available in red and green Integral Weaver mount Unlimited eye relief 1 MOA windage and elevation adjustment 5.5 oz. 3.25" long Matte black finish Includes a CR2032 lithium battery, 2 hex wrenches and lens cover
An inexpensive sight that you can quickly mount on airguns, firearms and airsoft rifles and pistols. This compact, lightweight reflex sight will help you drill your targets. The unlimited eye relief ensures that you'll always have a clear image no matter how far or close your eye is to the sight.

If you sight-in with one of the reticles, there is a very good chance that it will not be sighted-in when you change to another reticle. You will probably need to sight-in, again.