I am looking for laser grips for Model 66 revolver. I have read some reviews but I can't seem to find many to look at. Thought I would try here and hear from actual shooters.
There are several manufacturers out there. I have Crimson Trace grips on my Model 65 and am totally impressed with their performance. Most decent size gun shops carry them.
Crimson Trace makes integral laser grips for most S&Ws.
Since your M66 is a snub, I don't know if it is round butt or a square butt. Make sure before you order, but I'm sure they make both.