You may need to use the ACR hammer spring to hold the safety detent lever in place. When you take it all apart you'll see that it's a hair longer with a bend in it. I dropped in a Geiselle awhile back and did exactly that and it works fine. Unless you're trigger finger is that finely tuned it's not much of a difference.I just wanted to check that all AR-15 triggers will fit in an ACR or do I need an ACR specific trigger?
I have a Geissele GA-SSA-E that I would like to install in my ACR from an AR build I never got to,possible?
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