These were made from some dollar store toy guns.
Two were kinda ‘contemporary’ and one was what I would think of as a cowboy gun.
I used two cheap doctors toy sets, the kind with stetescopes (sp?) And syringes etc. Glued lots of bits on, with other random stuff I have lying around. Then spray painted. I added more paint, but still wasn’t happy. The tube bits reacted with the spray paint and stayed sticky.
So I busted out the silver leaf. After dirtying the guns with some brown paint, I added silver leaf here and there. Wrapped the handles with strips of pleather. Added some copper wire to the cowboy gun, this is the least successful imho.
And since it’s steampunk, glued on lots of gears.