It's my experience that usually the Krieghoff barrels will interchange very well with little or no fitting. When I bought my skeet barrels, they were lacking the extractors. The gunsmith also sold Krieghoffs. He offered the Remington barrels with Krieghoff extractors for $125 and a set of Krieghoff barrels for $150. There are some very minor cosmetic differences in dimensions with the extractors but they have worked well for over 40 years. About 15 years or so ago, I tried a brand new K-80 barrel set and forearm on one of my guns and they fit and shot fine. I have a friend that has a Remington 32 that has had the top slide replaced by one from Krieghoff. Works well.
