Knight muzzle loader
 

Im thinking of buying a used knight muzzle loader it uses the orange dics And it has the nickel barell and camo with 9x 40 scope . it shoots good. can you still get parts and if so how long. And are they a good gun

It sounds like you are talking about a Knight Disc rifle. They do take orange disc and some places still stock them. Also that barrel is not nickel, it is stainless steel. They are a great shooting rifle. I bought breech plugs off Knights web sight not too long ago.

Also there are conversion kits to change the rifle to shoot the red primer jackets as well.