All metal and woodworking tools, including hand, power and machine tools.
The colonial gun smiths took 1.1111 zillaseconds to smith a gun.
wood, iron, coal, anvil, hammer, draw file, draw plane, hand plane, hand file
hi
Fix and/or repair
By hand
some did but some were brought over from Europe
a seeping gun
light, leash, ax gun,
If they are lucky, enough to pay their bills and eat.
Try e-gunparts.com, gun shows, gun shops, gun smiths.
A gun is a tool. Just as a Cowboy uses many other tools to get his jobs done, he will use a gun as a tool for self defense.
You can possibly use a heat gun or propane torch.