Get from Amazon : http://www.amazon.com/gp/product/B002ZVMJ9W?tag=wayofcats-20

Aim Sports Dual III. Sight with 4 Different Reticles

Optical scope with reflex lens provides wide field of view
Ideal for use in low light conditions choose from three brightness settings and red or green dots
1X magnification 25-millimeter objective lens and 24 x 34 objective diameter
Unlimited eye relief three-inch total length and 42-ounce weight
Includes limited lifetime manufacturers warranty :