I have a friend with a Ruger muzzle loading cap and ball pistol that is missing a few parts. I think it is called Ruger old army pistol. It is missing a few parts, the hammer and some screws and springs. Is there any place to find older Ruger parts, or someone who might have some setting around. I may have a chance to get ahold of it if I can find the parts. Thanks in advance, the toolman.