Found my answer -- THANKS

[Prairie Dawg, SASS #50329 1,081]

Hi Folks:

I would like to fit a modern Ruger Birdhead grip to an Old Army, but it uses the new type of trigger return spring (instead of the older spring/plunger).

If the profile of a vaquero or blackhawk trigger is the same (from the pivot hole to the sear), it should fit.  Does anyone know???.

Thanks in advance

--Dawg

[J-BAR #18287 2,801]

12 hours ago, Prairie Dawg, SASS #50329 said:

Hi Folks:

I would like to fit a modern Ruger Birdhead grip to an Old Army, but it uses the new type of trigger return spring (instead of the older spring/plunger).

If the profile of a vaquero or blackhawk trigger is the same (from the pivot hole to the sear), it should fit.  Does anyone know???.

Thanks in advance

--Dawg

 

And the answer is...??? 

[Prairie Dawg, SASS #50329 1,081]

"The sear surfaces are an entirely different geometry."

 

[Major E A Sterner #12916 152]

You need to make an adapter that uses the original type trigger return spring. You use the pin that the new model trigger springs hook onto to hold the adapter in place.