Let's figure out what you have there. I think your title was meant to say Schofield, but that was a 45 caliber large frame revolver for the military. The Model 3 was also a large frame revolver. You have either a 32 Double Action or a copy. I see what looks like flutes longer than S&W put on their cylinder, but may be the image. If a S&W, you will see very small roll stamped company, address, and patent dates. Please look at the barrel rib with a strong magnifier and see if the first line states: SMITH & WESSON, SPRINGFIELD, MASS?
If so, you have a small revolver that is chambered in 32 Smith & Wesson. The stocks on that model are only found on the 22 Hand Ejector, Ladysmith. You should look over the Vintage Gun Grips website and you will find reproductions, but ebay is about the only other place to look is ebay for an original set. Either option should fit with some minor work.