Take it to a gunsmith.
Smith and Wesson Model No. 2
Depends on the model
The Smith and Wesson model 27-2 denotes that there was a second engineering change to the original model 27.The second change indicates that Smith and Wesson changed the cylinder stop,and eliminated the trigger guard screw.
Take it to an authorized repair center or a qualified gun smith.
Someone modified it.
Aftermarket part
You will need to get it lettered by S&W
The frame size of a Smith and Wesson model 66 is K.
value of smith & Wesson model 5906 pistol
If you have enough money, yes.
This is one of those times when you need a gunsmith.
No such model listed in the Standard Catalog of Smith and Wesson. You will need to call the factory.