I picked up a upper in a trade a while back and finally tried to sight it in tonight. I had to crank the sight almost all the way to the left to get it to hit where I wanted it to. All of the components in the upper are new. CMT receiver, LMT BCG, PRI hand guards, standard front sight, 1/7 twist 16" barrel (not real sure of the make). Any ideas what could cause this? Who can I send this off to to make it right?
Thanks