Re: PA-63 Aftermarket Grips????
If you have not fired this gun you need to know it likes to crawl in your hand such that the you get hammer bite in recoil. I have relatively smaller hands and it gives me hammer bite. What I did with mine is put grip tape (skate board anti-slip board tape) on the back of the frame and make sure I grip the gun low.
I don't generally suffer this problem with other guns except for my High Power clone (Charles daly) which I solved by machining the back part of the hammer off. What a difference that made. I can now grip that gun high and not suffer hammer bite. Maybe something like this is a better solution for the PA-63 or the gun it was cloned after, the Walther PPK (??).