This Huben K1 is serial number 4. Still in good shape, no big outside cosmetic issues or problems. Will need a main valve seal kit in the future, as it does have some light internal leaking under high pressure. The gun shoots and cycles fine. It has a high round shot count, close to ~10K shots. Price reflects that it is used. This gun was not a safe queen and has never had any issues from the beginning, so everything is original and it has been shot a lot. If you have question or want more photos just ask. ~ $700.00 plus shipping. Paypal gift or add 3%. Prefer check or USPS MO will not ship until check or Paypal clears. Please ask questions if unsure of what you are getting.