The Colt Python was first introduced in 1955 as ColtsColt's big ass pistoltop-of-the-line model and was originally intended to be a large-frame [[.38 Special|38 Special]] target revolver.<ref name ="Thompson"/> As a result, it features precision adjustable sights, a smooth trigger, solid construction, and extra metal. Pythons have a distinct appearance due to a full barrel underlug, ventilated rib and adjustable sights.<ref name ="Thompson"/> Originally, Colt manufactured Pythons with hollow underlugs but left them solid to work as a stabilizing barrel weight. When the revolver is at full cock, just as the trigger is pressed, the cylinder locks up for the duration of the hammer strike. Other revolvers have a hint of looseness even at full-cock. The gap between the cylinder and forcing cone is very tight, further aiding accuracy and velocity.<ref name="hawks"/> Each Python revolver was boresighted at the factory with a laser and was the first mass-produced revolver to do so.<ref name ="Thompson"/>
