What Is the Difference Between Single-Action and Double-Action Revolvers?
Quick Answer
The difference between single-action and double-action revolvers is what the trigger does.
- Single-action revolver: The hammer must be cocked before each shot. Cocking the hammer typically rotates the cylinder and aligns the next chamber. The trigger then performs one action: releasing the hammer.
- Double-action revolver: Pressing the trigger can cock the hammer, rotate the cylinder, and release the hammer. On many models with an exposed hammer, the shooter can also cock the hammer first and use a shorter single-action trigger press.
- Double-action-only revolver: The revolver operates only through a double-action trigger press. These models may have an enclosed, internal, or non-cocking hammer design.
Single-action revolvers often appeal to shoppers interested in traditional designs and a consistent trigger after the hammer is cocked. Double-action revolvers offer two trigger modes on many models and are commonly paired with swing-out cylinders. Action type does not determine caliber, capacity, size, or overall quality.
The right choice depends on intended use, trigger preference, hand fit, sights, cylinder system, maintenance needs, and whether the controls are comfortable for the individual owner.
How the Two Revolver Actions Work
On a traditional single-action revolver, the trigger releases an already-cocked hammer. The hammer must be cocked again before each subsequent shot. Many traditional models use a loading gate and a fixed cylinder, although construction varies. The term single-action describes the trigger’s mechanical role, not the revolver’s capacity or rate of fire.
A double-action revolver allows the trigger to complete multiple mechanical tasks in one continuous press. It typically rotates the cylinder, cocks the hammer, and releases it. This generally produces a longer and heavier trigger press than the revolver’s single-action mode.
Many double-action revolvers are more precisely described as double-action/single-action. Their exposed hammer can be cocked first, after which the trigger only releases it. By contrast, a double-action-only model is intended to use the longer double-action trigger movement for every shot.
Do not assume action type from appearance alone. Shrouded and internal-hammer revolvers are often double-action-only, but model specifications and manufacturer documentation provide the clearest confirmation.
Practical Decision Points for Shoppers
Trigger Characteristics
A single-action trigger generally has less travel because the hammer has already been cocked. A double-action trigger has more work to perform, so its movement is usually longer and requires more pressure. Trigger weight, smoothness, reach, and reset characteristics still vary significantly among individual models.
Hand size matters. A shopper with shorter fingers may find some double-action trigger reaches uncomfortable, while another person may prefer a larger grip and longer reach. Grip shape and grip material can affect access to the trigger and hammer, so action type should be considered alongside overall fit.
Controls and Cylinder Design
Traditional single-action revolvers commonly have fixed cylinders accessed through a loading gate. Modern double-action revolvers commonly use cylinders that swing out from the frame. These are common patterns rather than universal rules.
Compare the cylinder release, ejector arrangement, sights, grip frame, hammer configuration, and cylinder capacity. If the revolver will be transported in a fitted case, check its overall dimensions against options in Cases & Storage.
Intended Ownership Experience
A single-action model may suit someone who appreciates traditional styling, deliberate mechanical operation, or a particular grip profile. A double-action model may suit someone who wants the choice between double-action and single-action trigger operation. A double-action-only revolver may appeal to shoppers who want one consistent trigger system without an externally cockable hammer.
None of these categories is inherently more accurate. Practical results depend on the individual firearm, ammunition, sights, fit, maintenance, and the user’s familiarity with the trigger. Qualified instruction can help a new owner understand the controls and characteristics of a chosen model.
Caliber, Ammunition, and Maintenance Considerations
Action type does not establish what cartridge a revolver uses. Both single-action and double-action revolvers are produced in multiple chamberings and frame sizes. Confirm the exact chambering marked on the firearm and in its manufacturer documentation before comparing products in Ammunition.
Also consider barrel length, sight type, grip availability, overall dimensions, weight, and whether replacement components are supported. Shoppers researching grips, sights, or other compatible components can browse Gun Parts, but compatibility should be verified for the exact manufacturer, model, and variation.
Revolvers still require routine care. Residue can collect around the cylinder, chambers, bore, ejector area, and frame. Appropriate supplies are available under Cleaning & Maintenance.
Before cleaning or inspecting a firearm, unload it, remove the magazine, lock the action open, and visually and physically check that the chamber is empty.
Safe Handling and Purchase Planning
Regardless of action type, apply the same core safe-handling rules:
- Treat every firearm as if it is loaded.
- Keep the muzzle pointed in a safe direction.
- Keep your finger off the trigger and outside the trigger guard until your sights are on the target and you have decided to shoot.
- Be sure of your target and what is beyond it.
When comparing revolvers, write down the exact model, action type, chambering, barrel length, sights, finish, and grip configuration. Similar-looking revolvers can have meaningful mechanical or dimensional differences. Check current federal, state and local law before purchasing or transferring any firearm. For transaction information, review the FFL transfers page.
Ready to compare traditional single-action models, double-action/single-action revolvers, and double-action-only designs? Browse the BT Gun Company Handguns category and evaluate each revolver by its specifications, fit, controls, and intended use.