I'm about to tear my hair out. Over the past couple years, I added different optics to my 9 mm pistols and carbines. Instead of getting better, I'm getting worse. I would like to get a ''Sightmark Laser Bore Sighter.'' When I read the reviews I see that half the people swear by them and the other half swear at them. I definitely want one that fits in the chamber. In your opinions, what do you think about them, or is there a better option out there? I know I can't be the only person going through this. What do you guys think. Joe