ar15 trigger problem

[FMJBT]

I don't know. Looking at the disconnector there is way less material there. The disconnector is the part that holds the hammer I wouldn't want to be messing with that.

The hammer is most likely only surface hardened though, where the disconnector is heat treated all the way through like a knife blade. Once you grind through the hardened surface of a hammer, it wears away very quickly. I'd keep an eye on that part to make sure it doesn't round itself off after a few hundred rounds.

[ar15barrels]

I don't know.

That's ok.
I do.