springs for colt GCNM

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springs for colt GCNM

Post by Deerspy on 10/9/2017, 4:32 pm

I bought 1974 year Colt GCNM and was going to change out springs , recoil , mainspring , firing and use springs that I had on hand , but there seams to be a lot of difference  in length,
Recoil spring is 5 to 6 coils short
mainspring is 4 coils short
and firing pin spring is short and weak 
all thin compared to my 1976 colt government modle

don't see any at Brownells , what should I use ? 
 , ,

Deerspy

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Re: springs for colt GCNM

Post by james r chapman on 10/9/2017, 5:51 pm

Wolfs correct weight springs.
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james r chapman

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Re: springs for colt GCNM

Post by rreid on 10/9/2017, 6:40 pm

Brownells sells Wolff springs. Their recoil springs come with a firing pin spring. I use the standard springs, not the variable ones. Variable springs didn't work as well with wadcutter ammo in my guns.
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Re: springs for colt GCNM

Post by Deerspy on 10/9/2017, 8:03 pm

what would be correct weight spring for GCNM with clark scope base and a ultra dot 1 inch

I am guessing it would be almost same as my government model that I have built 
with 1 inch ultra dot , 10# recoil , 19# mainspring, and the firing spring that came with the wolf spring.

guess I was thinking GCNM might be different because I never had a gold cup apart before.

Deerspy

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Re: springs for colt GCNM

Post by rreid on 10/9/2017, 9:15 pm

Depends on your loads. I have 10# recoil and 18# main in my Springfield with slide mount 1" ultra dot.
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