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AR15.COM
6/5/2026 9:37:50 PM EDT
Has anyone changed out the mainspring on the M9 22?

I read somewhere that someone had put a D spring in the 22 version.
So I got a 17lb one for the centerfire version but the spring is not the right diameter and will not fit over the hammer strut.

So I am wondering if someone has done it what spring did they use or did they mod the hammer strut

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