MG Arms has been hit-or-miss for me.
Aaron has done MUCH for me, built a few rifles, tuned a few others, he does outstanding work. All work has been first-rate.
He has even fixed a few mistakes made by other smiths around Houston. Nothing like paying for second-rate work, then paying someone else to fix it.
Save yourself the headache, go to Aaron, his prices are good and he turns stuff quickly.