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

[jjrothWA]

GOT photos!!

All response appreciated.

[jjrothWA]

Am going to get a new barrel.

Anyone recognize the two-piece recoli guide, as to manufacturere??

Definately, one step up from "BUBBA".

The slide bottom has numbers stampmed " 1 70" & "99 6", dates of when refurbished??

Thanks

[Johnny P]

Barrel is a late WWII (1945) Colt military barrel with the C in square, and P proof on lug. Has the look of an individuals attempt at making a target pistol.

[jjrothWA]

did five rounds over chronograph. no problems
Gave ny buddy a five round mag for his turn and bang, bangbangbang, and bang.

I tried again and got the same report.

So do I need to replace the both the sear / disconnector and the new four-fingered spring, and run the trigger screw in till is stops and back-out before firing?

THanks for replies.

[Johnny P]

Sounds like a hammer/sear problem. The hammer may have been modified in an effort to get a lighter pull, or the sear contact has been modified (or both). The trigger stop is just to prevent over travel. Just back it out until you get the other problem fixed.

[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