3953TSW Double Strike Capable

[ACEd]

A while back there was a discussion of a 3953TSW UCV5897 Product Code 404541 on the big site claimed to have Double Strike Capability. My 3953TSW with same Product Code 404541 does not have Double Strike capability and the consensus seemed to be that the 3914DAO were uniquely Double Strike capable and the 3953TSW was never made with that option.
A second 3953TSW BDJ9191 with Double Strike Capability has just surfaced on the same site, but the seller says it came with a second hammer which if installed (reinstalled?) in the pistol would convert it back to its original (not Double Strike Capable) condition.

Seems a bit odd but I was wondering if some of the experts could shed light on this - is it possible to convert a pistol by changing just the hammer and is the hammer likely modified as a one off piece or can a 3914DAO hammer be swapped into a 3953TSW.
Personally I am not interested in another 3953TSW, particularly one that has an undocumented modification, but both previous and current sellers seem to think this feature should command a premium price.
Call me curious.

 

[S&W 63]

Maybe I don't understand "double strike".... Since the first trigger pull is double action-If it doesn't go Bang-the slide doesn't cycle,so the unfired round is still in the chamber-Then you pull the trigger again(?double strike?). Seems like both DAO And TDA would act the same....

 

[Erich]

Most S&W semiauto DAOs are partially cocked by the slide action and don't have restrike capability, S&W 63.

Member "Dave Nash" was heavily involved with the engineering of the Third Gens and could shed light on this if he happens to see it.

 

[S&W 63]

I understand "if" the slide has to move to cock the hammer. But we are talking 3rd Gen pistols. DAO and TDA don't require the hammer to be cocked before you pull the trigger, if I understand. My "New to me" 6906 (TDA) Which I have only dry fired at this point, cocks the hammer with each trigger pull, even if the slide doesn't cycle. I would assume DAO would act the same. Or am I missing the point about the slide partial cocking the hammer??

 

[LVSteve]

I understand "if" the slide has to move to cock the hammer. But we are talking 3rd Gen pistols. DAO and TDA don't require the hammer to be cocked before you pull the trigger, if I understand. My "New to me" 6906 (TDA) Which I have only dry fired at this point, cocks the hammer with each trigger pull, even if the slide doesn't cycle. I would assume DAO would act the same. Or am I missing the point about the slide partial cocking the hammer??

Most of the "DAO" 3rd gens are really partially cocked actions. Once the sear is released the trigger is dead unless the slide is racked. Arguably, these guns are not a true DAO design, they are more like a Glock with a hammer.

True DAO semi-auto pistols where pulling the trigger will cycle the hammer are around. As noted a few a special S&Ws. Others that come to mind are the Sig P250, Keltec P11, and the SCCY CPX series. All of these guns operate as "square revolvers" with no single action mode.

 

[JohnHL]

A while back there was a discussion of a 3953TSW UCV5897 Product Code 404541 on the big site claimed to have Double Strike Capability. My 3953TSW with same Product Code 404541 does not have Double Strike capability and the consensus seemed to be that the 3914DAO were uniquely Double Strike capable and the 3953TSW was never made with that option.
A second 3953TSW BDJ9191 with Double Strike Capability has just surfaced on the same site, but the seller says it came with a second hammer which if installed (reinstalled?) in the pistol would convert it back to its original (not Double Strike Capable) condition.

Seems a bit odd but I was wondering if some of the experts could shed light on this - is it possible to convert a pistol by changing just the hammer(?)

Yes.

(A)nd is the hammer likely modified as a one off piece or can a 3914DAO hammer be swapped into a 3953TSW(?)

Either.

Personally I am not interested in another 3953TSW, particularly one that has an undocumented modification, but both previous and current sellers seem to think this feature should command a premium price.
Call me curious.

It's all about the location of the notches on the hammer.

Remain curious.

It will serve you well.

John