S&W Model 629-6 in 44 Mag.
I have just acquired a S&W Model 629-6, Serial #CFM83XX, Mountain Gun in 44 mag. Two questions: 1. When was it manufactured/what changes were made from "5" to "6"? 2. Front ramp and rear sight are flat black; is there a front ramp available with a white incert and rear white outline? If so where?