Hopefully he didnt torque it down over 30ftlbs. Once you go over that mark it constricts the muzzle and your accuracy goes to hell.
Typically i set my wrench for 30lbs and torque until its lined up or hits 30ftlbs. Since thats a non directional brake, meaning it doesnt compensate for bullet torque it should be lined up.
Kinda why i prefer to diy one simple jobs like this.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
Took it the original place that installed the Dynacomp and showed a guy. He said it won't cause any problems. I told him it should be aligned. He told me they can do it but it would take a few days. I decided to take it to another gun store that has an armorer. Everyone employee took one look at it and said it wasn't right. I left it with them and the armorer will call me and let me know what's up. I'm thinking of having the barrel chopped and the muzzle brake pinned. Anyone have any experience with that?
Are you in a ban state? If not I'd leave the barrel 16" and not pin the muzzle device. Why go to all that trouble for 1.5", index it and torque it properly.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together. You'll remember the quality of a gun long after you forget how much you paid for it.
US Army 1966-69, VFW Life Member, Retired Geek