In 2003 Sig released their latest version of the Sig Pro designated the SP2022. It featured a Picatinny rail moulded into the frame and several other improvements. The Sig Pro series have polymer frames with interchangeable grips for different hand sizes (they were one of the first companies to do this) and the usual hi machining and finish quality you would expect from Sig Pistols.
This particular example is the double action only model that has been popular with law enforcement. It is chambered in 9mm and comes complete with pistol box, instruction manual, factory shot accuracy/point of aim card and London Proof House Certificate. It has some light pitting to the slide but otherwise is in good condition.