Developed as a combination of the Mark V Trooper frame and the Python barrel, the Colt Boa was manufactured only in 1985 as a Lew Horton Distributing limited edition, with a total run of only 1,200, with only 600 in this configuration, making it among the rarest of the production model Colt "snake" double actions. Blade front and adjustable notch rear sights, with "BOA .357/357 MAGNUM CTG." on the left side of the barrel, and a pair of checkered wraparound hardwood grips with Colt medallions.