The revolvers are divided into two categories: - Single Action: Also called Single Action Army, the shooting of the projectile cannot be assured if the hammer is not armed in the hand before. It is the type of weapon favored for the fanning shoot, a shooting technique used in Cowboy Action Shooting which consists of keeping the trigger pressed down while bringing the hammer backwards in order to shoot more quickly. - Double Action: here, the trigger tail allows you to both gently arm the hammer and release it to fire the projectile.