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mainspring housing ss

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Is here someone that can tell me how will work an STI EDGE 40 S&W if I change the original mainspring housing polymer with a mainspring housing ss? Do the gun will flip up more or less?
Thanks for your comment.
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it will not change much. I little but not much. You are adding weight really close to the center of rotation. If you added weight at the end of the barrel it would change the recoil to a slower more of a push. If you remove weight at the barrel end the gun is faster to recoil but faster back on target if you can do that.

What do I know.
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