WTinMinn -
The Speed Six and GP100s are in different generations. The Speed Six and Security Six (adjustable sights) were introduced about the same time.
The GP100s were introduced some years later as new and improved.
I left Law Enforcement 18 years ago. My last service revolver was a 4" GP100. This is when everybody carried S&W Mod 66's (a very good revolver.)
When it came to qualifying scores and the County Match there were some that allowed the GP100 wasn't all that bad. <img src="/ubbthreads/images/graemlins/smirk.gif" alt="" />
