This pistol was built in the 1980s, in Ruskin Florida, on a Colt Officers Model frame. It has the original slide and barrel, as well as a custom slide, and compensated barrel by Guncraft. Many upgrades, including a Guncraft patented magwell, Videki trigger, Swenson Ambidextrous safety, 20 line checkering for better grip...Many, many hours of labor went into this .45 acp. In it's day, it was top of the line.🙂