What was the common upgrades for turning a 1960 era Colt GM..

[lyman]

ditto Johnny's comments

looks like as mentioned one step or maybe 3 above bubba,

clean the sear and hammer and see how they interact, maybe a worn sear that caused the tripleplay, or worn hammer ???

a slight bend to the sear spring may solve it, or not, won't know till you try,


and yes, ditch that recoil guide, standard stuff works fine,

[jjrothWA]

What should be the diameter of the bore for the disconnector to operate.
Noticed that there seem to be punch marks on top surface as to try an minimize that bore?

Did purchase a new mainspring [three fingers} and looking to get replacement sear and disconnector.

[lyman]

are you talking about the disconnect hole in the frame, where it sticks thru to ride against the slide?


and curious if the numbers on the slide are the serial number ?

[Johnny P]

Inside slide marking looks somewhat like what Jim Clark used, but rest of pistol doesn't.

A Clark "Hardball", 302 last digits of serial number, assembled in October 1971

[lyman]

could have been Clark reworked by ??? at a later time?

all speculation of course