I bought these grips a while back on eBay thinking they would fit a Colt Police Positive or possible a single action. Nope, won't fit. The frames on my revolvers have an inset that won't accept a flat faced grip like this. They also came with a wooden insert spacer to fill in at the bottom, I assume for a smaller frame gun. They appear to be actual stag bone grips and have been drilled for an alignment pin but didn't come with one. Any ideas would be most appreciated!