i was at the gun store and seen a muzzleloader there stainless barrel and plastic stock so i looked at it and it was a knight disk kinda dirty on the outside, the ss was like gray so i wasn't hopeful about the bore...it was on sale for 99.99 i went back 3 days later and it was still there i had a borelight this time and the bore's nice and clean....theres no nipple on the breechplug it's not a red plastic primer breechplug, I don't see any treads for the nipple so i'm thinking it may be the orange primer type ,tomorrow I'll take it apart. I not sure how the orange primer works lol I've got 2 mk-85's and if the disk shoots anything close to them I'll be very happy its got fiber-optic sights too