Iowegan· Retired Moderator & Gunsmith
Ruger didn't intend to replace the Six-Series with a GP100. In fact both platforms were in production at the same time for a couple years. Finally, sales for the Six-Series dropped where they were no longer profitable and got discontinued. Another small tidbit .... A Security-Six with an equal length barrel and the same type lug will weigh a few ounces more than a GP100. Why? Because Six-Series revolvers have a full sized steel grip frame whereas a GP100 has a much lighter grip lug. GP100s have a more massive cylinder and thicker top strap so what it really amounted to .... the weight was redistributed to improve overall strength.