Smith and Wesson .38 Special handgun parts have the same nomenclature on every gun. Learn the names of the parts of a S&W 642 .38 Special in this free handgunvideo. Expert: Jeff Brewer Bio: Jeff Brewer has been the owner of Patriot Firearms for over 12 years. He sells, demonstrates and explains to customers daily the proper use of many different kinds of firearms. Filmmaker: Christopher Rokosz