I wouldn't put this thing on a BB gun. If you're looking for a red dot then stay away from this! It's constructed of ALL plastic. Lenses are paper thin and I/O switch is almost impossible to turn. Just spend the extra money on Nikon or ATN. You'll be glad you did.
Cons: a bad design from the ground up
This review was written in the old system and had content requirements that are different than reviews written today.