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frankge

Grandmaster - changing out RM

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Hi,

 

I have a new to me STI GrandMaster in 9mm major. It has a recoil mater in there now. I bought a ss guiderod and a 8# and 9# springs. What would you think is about the same as the RM?... 9#?

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Yes, my guess is that 9# would be a good starting point. 

I just did the same thing on an older custom gun that had an RM which I'm setting up to shoot 9mm minor and a 7# spring works great,

 

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I shoot a Trubor with an 8. 

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9 pound spring with an alumabuff is what I run, been working for me for a while.

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wolf 8# does the job for me

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