Unlike the other reviewer, I am very unhappy with my purchase experience. Upon recieving the Red Dot, the battery was already dead. I replaced with the included extra and immediately found out why the first was dead. Even though it was supposed to shut off when the cover was applied, it did not. I sent the sight back to the manufacturer requesting it be fixed/replaced and tested before coming back to me at my expense. They ended up replacing it, but the replacement does the exact same thing(even arrived with a dead battery of it's own). The dot starbursts and gives a blurry image, but so far has stood up to recoil fine. Save your money for the real deal, I recommend passing for something better.