Bsa ls650 laser bought with to high expections - BSA Optics Laser Scope w/ Mount - LS650

I bought the LS650 laser hoping to better my aim because my bifocal glasses make it hard to see the sights, on my Shanghi air gun, and target correctly. The laser won't hold a zero at all. Every time I shoot the gun the light goes to a different location. I know that because the pellet go to a different location. The adjustment screws are sloppy. Sometimes I have to turn the screw a full half a turn to start the light to move. I have emailed BSA 3 times and given them the same information without any response. It eats batteries like crazy. and at $7.50 for 3 their not cheap.
Pros: 1
Cons: 4

This review was written in the old system and had content requirements that are different than reviews written today.