S&W model 4006TSW made specially for the California Highway Patrol manufactured in 2007. It has a heavier frame than the standard 4006, was hand assembled by the S&W Performance Center with oversized rails and hand lapped slide, and short reset trigger. The frame, barrel and slide have special, matching CHP serial number. Face to face in Buda, must be a Texas resident 21 or older with Texas drivers license, LTC or CHL, and sign a bill-of-sale.