double action
Cocks and fires
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 in one pull, unlike single-action guns requiring manual cocking first: a double-action revolver.
The term appears in other contexts where one movement accomplishes two tasks, as in certain fishing reels or pumps that work on both strokes.
Pistol with rotating chamber
- triggerWhat initiates action
- cylinderCircular-based solid form
- hammerTool for striking nails
- cockingTurning at an angle
pull · pistol · semiautomatic · firing · handgun · discharge · striker · mechanism
Fluid-moving machine
- cylinderCircular-based solid form
- pistonReciprocating cylinder component
- strokeSudden brain blood blockage
- hydraulicRelating to pressurized liquids
pneumatic · compression · reciprocating · actuator · press · extension · retraction · bidirectional
Chemical rising agent
- leaveningSubstance causing dough expansion
- riseMove to higher position
- acidLow-pH chemical compound
- baseSupporting bottom structure
biscuit · quick bread · carbon dioxide · cream of tartar · sodium bicarbonate · chemical · aluminum-free
revolver
Pistol with rotating chamber
cocking · pull · pistol · semiautomatic · firing · handgun · discharge · striker · mechanism · cartridge
pump
Fluid-moving machine
- cylinderCircular-based solid form
- pistonReciprocating cylinder component
- strokeSudden brain blood blockage
hydraulic · pneumatic · compression · reciprocating · actuator · press · extension · retraction · bidirectional · force
baking powder
Chemical rising agent
base · biscuit · quick bread · carbon dioxide · cream of tartar · sodium bicarbonate · chemical · aluminum-free
- quick drawfast draw, gunslinger, gunfighter, holster, six-shooter
- triggerstrigger, trigger mechanism, trigger assembly, trigger pull, sear
- airbrushingcompressor, nozzles, needles, overspray, masking
- Gun Featuressemi-automatic, semi-auto, automatic, blowback, bullpup
- gun mechanismssemi-automatic, automatic, blowback, semi-auto, self-loading
- gun specscaliber, barrel length, muzzle velocity, rate of fire, effective range
double actionsingle action
Firearm mechanism type
single-action · single-stage · direct action · striker-fired · bolt action
double, action, doubled, doubling, doubles, doubly, redouble, redoubled, redoubling