I put a kit together once,I went to my gunsmith and he gave me a little bottle of blueing.it turned the metal a kind of black color.
you have to treat the metal with this and then oil very well because it will put a thin layer of rust till you oil it.
sorry I don't remember the name of the liquid.ask your gunsmith.


I am not a hunter I am a whitetail population reduction specialest

remember keep your back to the sun, your knife sharp, and your powder dry.