Hello, this is my first post and I came here looking for help. I purchased a FN Herstal SPR A5M, and full internals and a zero trigger all by Angel Custom, minus the tightbore barrel. I have the gun together that is no issue I know VSR's fairly well. (I think so Atleast) The issue comes when I...

My mb01 has started to slam the bolt forward whenever i pull it back. A friend told me to get a new trigger box so I bought a new metal trigger box and it still does it. Any thoughts?