Complete Colt 635 9mm upper. Its used and shows it externally, but still has good rifling and runs perfectly. A good upper if you want a Colt quality shooter, but don't want to spend bigger bucks for a blaster. 10.5" barrel, full auto bolt, charging handle included. $450 +shipping.
Will consider trades for a Krink parts kit, Bushmaster AR15/M16 parts.