Lincoln, NE rail install help

Anyone on here in lincoln nebraska that could help me with a rail install? Got a parallax tactical rail and I don't have receiver action blocks to remove the GI barrel nut and install the new one. I have a set on order, but I'm heading home (to north platte) friday evening and would like to take the ar along with the new rail installed. If no one can help could you point me in the direction of a gunsmith that could do it? All I have come up with is Schlereth's gun repair, but I know nothing of the place. Thanks in advance!