Bubsy, I have CT laser sights on 3 of my handguns. 1 J frame snubby , one Kimber compact .45 and a full sized GM .45. Had them for several years now.
On all of them, they are good out to about 15 yds in full daylight. Anywhere else, they are superb.
At night when things go Bump, that laser is the greatest. Only on when you squeeze the switch, You know exactly where your shot will go. You do not have to find or align your sights, which is rather nice in the dark.
Change the batterys once a year and rock on.
Trigger control + Breath control + Sight alignment = Gun Control.
NRA Smallbore Prone Master, High Power Master