I have a 700ml Blued 50 cal up for sale, I just installed the Arrowhead 209 boltnose and breech plug to eliminate the blowback and make it Blackhorn 209 compatible. Gun come with weaver rings and bases. The gun cleaned up nice only a little corrosion near the breech plug. I would like to get $525 shipped or could do FTF in Va near winchester. I bought this gun and upgraded it for my brother in law, he has had some unexpected expenses come up so wants it sold instead of keeping. I have this cross posted on 24campfire and can provide references.