Pro Carry Paul

i have 3 WWII German marked pistols complete with original magazines and leather holsters. i am thinking of selling 2 of the three but would like to get the FN m1922 32 cal pistol completely checked out, reblued, and safe to shoot.

i have shot it already, seems to function well except for the thumb safety not locking back the slide.

any rough ideas on what i'd be looking at to clean this pistol up?

also, would like to find some grips for it and would be willing to get custom ones done if needed.

thanks guys!