Sadly...they don't fit. I removed the backstrap and one-piece block (grips) and tried to fit the Buffalo Bros. to the backstrap frame, but they do not fit. Buffalo Bros. suggests sanding to fit, but it would be an awful lot of sanding and I don't want to ruin the look. So, I am trying to see what they will charge to fit them. If its not reasonable or feasible, I will just ask for a refund.