Hull Cartridge is simply the official importer in the UK. Other RFD can import Weihrauch too so our friend's rifle is likely to be one of these so called 'grey imports'. The only different is the stamp and who covers the warranty. The only big issue is a grey import may have to go back to Germany if there is a problem other than Hull with Hull Cartridge so the turn around time is likely to be longer. I have been buying greys for years as they are usually cheaper and have had no problems.