I recently aquired a pinned barrel Model 66 that belonged to my grandfather. Purchased in the early 70's I believe. What grips to you recommend? I want something kind of slim (so no bulky wood grips) and have a good rubbery feel. Can someone send me a link too I'm having difficulty finding which one I need. I see "square butt" and "round butt" K Frame grips but that means nothing to me as I don't know the difference. Some explanation? I'm new to revolvers and from what I hear, I don't even understand what I just aquired.