Alright, I'm at my wit's end. Maybe someone here has seen something like this.
I've got a Bushy upper and I've put a 12" YHM free-float forearm on it. The forearm is crooked, however, so with attached iron the gun shoots way off.
I thought at first it was the tube itself. I put a second one on and it lines up identical to the first. That's not the problem.
I emailed YHM, and they say "sometimes the hole in the reciever that the barrel
installs in is not perfectly straight. A fraction of an inch off at the barrel nut is multiplied
over 12" of length. If this is the case, you can either live with it or replace the reciever."
I ran that by my gunsmith, who dismissed it as poppycock. He thinks it's either a bad lot of YHM tubes or the barrel nut not threading onto the receiver properly.
I asked him to test the barrel, which he did by dropping a rod down it, so we know it's not bent, but how does that determine whether or not it's straight on the receiver? And how can I tell if the threads for the barrel nut are straight without throwing cash at a replacement nut?
I'm too heavily invested into this gun to not fix this, but I can't go tossing money at every little thing that *might* be wrong. Can anyone speak to this problem? I'm running out of hair dealing with this.
This is not what I envisioned for my first AR. Having a hard time justifying another one already...
Thanks for all the help.