double-action
Works both directions
Double-action describes a mechanism that performs two functions with a single motion.
In firearms, a double-action trigger both cocks and releases the hammer with one pull: a double-action revolver.
In baking, double-action baking powder reacts twice—once when mixed with liquid, again when heated.
The term contrasts with single-action, where each function requires a separate step.
revolver
Pistol with rotating chamber
cylinder · handgun · sidearm · recoil · cartridge · ammunition · caliber · holster · grip · sights
- frontier weaponssix-shooter, peacemaker, Colt revolver, derringer, Winchester
- firearmsrifle, pistol, handgun, shotgun, revolver