I would like to know the answer to that question as I have an early Huntsman, which must be early '90s/late '80s, I think, but I prefer springers these days so was thinking of selling mine. What is FTR? I believe these Huntsmans were produced with Anschutz barrels and, as you say, they are extremely accurate. I have the original instruction manual so can check any technical question you have, assuming this is present within. There is a hose, which connects to the filling tank and the rifle, with a gauge on it.