Try Dareing Arms in Denton, Tx 512-423-7302 Does pretty nice custom gun work, all types finishes and can built your rifle from scratch, makes his own lowers, uppers, and barrels
You might want to try CMC triggers, they are drop in triggers and made in Ft Worth, a little cheaper than Timney and real easy to install. I put one in my M & P 15 and M & P 10.
They are set for a 3# pull, very satisfied with mine