I have it mounted on my Mossberg 500, and shooting 7 1/2 shot it held its zero fairly well, moved a little bit, but when I switched to 00 Buck, it threw off my zero quite a bit. The screws came loose, and the front screw wont tighten down. Also the objective may be 45mm but what you actually see through is about 30mm. This Red Dot will work well with an airsoft, paintball or low recoil rifle.
Pros: Cheap, Easy On/Off, Easy Mounting
Cons: Screws come loose, and dont tighten down, bulky
This review was written in the old system and had content requirements that are different than reviews written today.