i just bought a used knight muzzleloader and took it the nipple and breech plug out of it to clean it but before i do what should i use? i have some cleaner that i use to clean the bores of my shotguns will that work? and should i put the nipple and breech in some boiling water? any help would be appreciated seeing how i got this thing apart in front of me right now and dont know what to use!lol

The solvent you use to clean your other rifles will work for cleaning the muzzleloader. I am guessing there is a good coat of oil, grease, and dirt in the rifle if it is used. For simple fowling, just soap and water will remove that. The solvent will clean the copper, lead, and plastic fowling.. if there is any.

You do not mention which model rifle this is. Some of them your best to leave the bolt alone. Do not take it apart or some also require a C tool depending on the age. But back to your question.. to clean the bore of the rifle, run some solvent patches through it, then some dry patches. After that some gun oil on a patch and swab the bore down well. Wipe the bolt off real good. And as for the breech plug and nipple clean them as well. Then use some anti seize on the threads of the breech plug and nipple and assemble the rifle again. Don't forget to clean and oil the trigger assembly.

Being it has a nipple, I am going to guess you have a USA America, LK-II, Wolverine, or Bighorn. Good luck with your rifle.

it is an american knight, it came with a tool that is used to take it apart, one end removes the nipple, the other end removes the plug

If you didn't get a manual with the gun I'd call Knight and get a copy for specific cleaning recommendations.