i know this is a dumb ass question.. but whats this mean me and my dad were talking about it and we think two diff things..
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Single Action/Double action??
- Thread starter gilley
- Start date
Almost the more you think about it, the more complicated it becomes.
Here is a basic rundown taken from Wikipedia:
A single-action (SA) trigger performs the single action of releasing the hammer or striker to discharge the firearm each time the trigger is pulled.[1] Almost all rifles and shotguns use this type of trigger.[1] Single-action semi-automatic pistols require that the hammer be cocked before the first round can be fired, although most designs cock the hammer as part of the loading process (e.g., the act of inserting the magazine and operating the slide mechanism to chamber the first round also cocks the hammer or striker into the ready-to-fire position).[2] Once the first round is fired, the automatic movement (recoil) of the slide cocks the hammer for each subsequent shot. The pistol, once cocked, can be fired by pulling the trigger once for each shot until the magazine is empty. The M1911 and Browning Hi-Power are single-action pistols that function in this manner.[2] Single-action revolvers require the hammer to be cocked by hand every time the weapon is fired.
A double-action, also known as double action only (DAO) to prevent confusion with DA/SA designs, is similar to a DA revolver trigger mechanism. The trigger both cocks and releases the hammer. However there is no single action function. A good example of this action is the Sig Sauer DAK trigger. For semi-automatic pistols with a traditional hammer (that employ only the double action function of the trigger), the hammer will return to its decocked position after each shot. Subsequent shots require the double action trigger firing sequence. For striker-fired pistols such as the Taurus 24/7, the striker will remain in the rest position through the entire reloading cycle. This term applies mostly to semi-automatic handguns; however, the term can also apply to some revolvers such as the Smith & Wesson Centennial, the Type 26 Revolver, and the Enfield No. 2 Mk I revolvers, in which there is no external hammer spur. Glock and Kahr semi-automatic pistols are not DA (or DAO) pistols because the striker is "cocked" to an intermediate position by the operation of the slide and they cannot be re-activated by pulling the trigger a second time.
A double-action/single-action (DA/SA) firearm combines the features of both mechanisms. Often called traditional double action, these terms apply almost exclusively to semi-automatic handguns. The function of this trigger mechanism is identical to a DA revolver. However, the firing mechanism automatically cocks the hammer or striker after the gun is fired. This mechanism will cock and release the hammer when the hammer is in the down position, but, on each subsequent shot, the trigger will function as a single action. The Mateba Autorevolver is a semi-automatic revolver that functions on a DA/SA system. The Beretta 92 is a good example of a DA/SA semi-automatic pistol. On many DA/SA pistols (including the Beretta), there is the option to cock the hammer before the first shot is fired. This removes the heavy pull of the double-action. Also, there is often a de-cocker to return the pistol to double-action.
A second distinct type is that used by the majority of double-action revolvers, where the weapon can be fired in either double-action mode by pulling the trigger, or single-action mode by cocking the hammer manually before firing. This is distinct from double-action only, since the weapon does not have to be fired in double-action mode, for example, the Colt Python.
Here is a basic rundown taken from Wikipedia:
A single-action (SA) trigger performs the single action of releasing the hammer or striker to discharge the firearm each time the trigger is pulled.[1] Almost all rifles and shotguns use this type of trigger.[1] Single-action semi-automatic pistols require that the hammer be cocked before the first round can be fired, although most designs cock the hammer as part of the loading process (e.g., the act of inserting the magazine and operating the slide mechanism to chamber the first round also cocks the hammer or striker into the ready-to-fire position).[2] Once the first round is fired, the automatic movement (recoil) of the slide cocks the hammer for each subsequent shot. The pistol, once cocked, can be fired by pulling the trigger once for each shot until the magazine is empty. The M1911 and Browning Hi-Power are single-action pistols that function in this manner.[2] Single-action revolvers require the hammer to be cocked by hand every time the weapon is fired.
A double-action, also known as double action only (DAO) to prevent confusion with DA/SA designs, is similar to a DA revolver trigger mechanism. The trigger both cocks and releases the hammer. However there is no single action function. A good example of this action is the Sig Sauer DAK trigger. For semi-automatic pistols with a traditional hammer (that employ only the double action function of the trigger), the hammer will return to its decocked position after each shot. Subsequent shots require the double action trigger firing sequence. For striker-fired pistols such as the Taurus 24/7, the striker will remain in the rest position through the entire reloading cycle. This term applies mostly to semi-automatic handguns; however, the term can also apply to some revolvers such as the Smith & Wesson Centennial, the Type 26 Revolver, and the Enfield No. 2 Mk I revolvers, in which there is no external hammer spur. Glock and Kahr semi-automatic pistols are not DA (or DAO) pistols because the striker is "cocked" to an intermediate position by the operation of the slide and they cannot be re-activated by pulling the trigger a second time.
A double-action/single-action (DA/SA) firearm combines the features of both mechanisms. Often called traditional double action, these terms apply almost exclusively to semi-automatic handguns. The function of this trigger mechanism is identical to a DA revolver. However, the firing mechanism automatically cocks the hammer or striker after the gun is fired. This mechanism will cock and release the hammer when the hammer is in the down position, but, on each subsequent shot, the trigger will function as a single action. The Mateba Autorevolver is a semi-automatic revolver that functions on a DA/SA system. The Beretta 92 is a good example of a DA/SA semi-automatic pistol. On many DA/SA pistols (including the Beretta), there is the option to cock the hammer before the first shot is fired. This removes the heavy pull of the double-action. Also, there is often a de-cocker to return the pistol to double-action.
A second distinct type is that used by the majority of double-action revolvers, where the weapon can be fired in either double-action mode by pulling the trigger, or single-action mode by cocking the hammer manually before firing. This is distinct from double-action only, since the weapon does not have to be fired in double-action mode, for example, the Colt Python.
Single action is where you must cock the hammer manually to be capable of firing the gun. Double action allows the gun to fire by pulling on the tripper. Each pull will advance the cylinder to the next round to be fired when the hammer drops. Cowboy action shooting is single action.
so if you have a revolver and you cock the hammer back thats single action? and if you just pull the trigger its double?
If you are referring to a traditional double action/single action type of pistol (DA/SA), like the Beretta 92 or the 3rd generation of S&W pistols like the 3913, 5903, 5906, etc. it means that after inserting a loaded magazine and racking the slide to chamber a round, the safety/ decocker can be pressed to safely decock (or move forward) the hammer. Then, the first long trigger pull will be in double action (cocking the hammer before firing the gun). The remaining rounds will then be fired in single action with a shorter trigger pull because the slide's action (of moving rearwards and ejecting the spent brass and moving forward to chamber the next round) will cock the hammer for subsequent rounds.
You may be talking about two things because sa/da means different things based on the handgun type.
SA/DA in a revolver means you can choose to fire either way.
SA/DA in an auto loader usually means the first shot is (normally) DA and subsequent shots are SA -- because the slide cocks the hammer.
SA/DA in a revolver means you can choose to fire either way.
SA/DA in an auto loader usually means the first shot is (normally) DA and subsequent shots are SA -- because the slide cocks the hammer.
Yes, on a double action revolver. On a single action revolver, if you pull the trigger without cocking the hammer, nothing will happen (the gun won't fire)
Single action-
When referring to a revolver it means that you have to pull the hammer back with your hand or thumb every time you want to fire a shot(cock it and then pull the trigger) Examples are Colt Single Action Army(SAA) Ruger Blackhawks, Ruger Vaquero, Ruger Super Blackhawk, etc.
When referring to a Semi Automatic pistol it means that you have to manually cock the hammer for the first shot but not on subsequent shots because the slide cocks the hammer for you. Examples are 1911's and Browning High Powers.
Double Action
For revolvers it means that when you pull the trigger it cocks the hammer and then fires the pistol (albeit very quickly). For a revolver this must be done for every shot. Most double action revolvers can also be fired in single action mode as well. Examples (in my experience) are Most revolvers with a swing out cylinder.
For a Semi Automatic pistol means that when the hammer is not cocked you can pull the trigger and it will cock and fire the pistol. you do not have to cock and fire the pistol with the trigger for every shot because the slide cocks the hammer when it cycles. This type of action is sometimes referred to a Double Action/Single Action (DA/SA) Example Sig P226..
When referring to a revolver it means that you have to pull the hammer back with your hand or thumb every time you want to fire a shot(cock it and then pull the trigger) Examples are Colt Single Action Army(SAA) Ruger Blackhawks, Ruger Vaquero, Ruger Super Blackhawk, etc.
When referring to a Semi Automatic pistol it means that you have to manually cock the hammer for the first shot but not on subsequent shots because the slide cocks the hammer for you. Examples are 1911's and Browning High Powers.
Double Action
For revolvers it means that when you pull the trigger it cocks the hammer and then fires the pistol (albeit very quickly). For a revolver this must be done for every shot. Most double action revolvers can also be fired in single action mode as well. Examples (in my experience) are Most revolvers with a swing out cylinder.
For a Semi Automatic pistol means that when the hammer is not cocked you can pull the trigger and it will cock and fire the pistol. you do not have to cock and fire the pistol with the trigger for every shot because the slide cocks the hammer when it cycles. This type of action is sometimes referred to a Double Action/Single Action (DA/SA) Example Sig P226..
ok we were talking about in a revoler guys.. and i have to say age won this time lol.. guess ill learn one day what the old timers say is right lol..
