I did the oversize grips from FA and they came out very nice , I have made grips for Colt Clones in the past from scratch . When I return home in a week I am going to make some oversize blanks out of Corian , I got ahold of some Ebony (black) and some white. These will be for the old style of grip frame that uses a nut to hold the mainspring on . The only advice I can offer on fitting them is to go slow and keep cheeking the fit , FA gets like $200 ? for a set of fitted grips as apposed to $45 for the oversize blanks so it must tell you it takes a skilled person some time , for those of you that are like me and have only done a few sets with limited skill and am very paticular it takes alot of time to et them to come out right.