Its either a Palmer Stroker or Typhoon? I always forget how to tell the difference. (The later being factory built, while the former being a conversion from a PMI/Pirahna).
Regardless, it should have a serial number on it. You can then call palmers, and they can give you a history of that gun.
__________________ www.montneel.com "the evidence strongly suggests that neither Billy nor Adam (Smart Parts) could have invented the electronic paintgun" -Garr M. King, U.S. Judge