Smith & Wesson 4506-1, .45 cal. auto pistol. Serial #TZK5431. Excellent condition. Stainless. 5" barrel has an excellent bore. Single/double action with ambi decocker/safety. Three dot white fixed combat sights. Wrap around soft rubber grips are very good. One 8-rd. magazine included. Made famous by detective Sonny Crockett of "Miami Vice" fame.... Gunrunner West item.