AR Gunsmith in DFW?

I moved back to the DFW are last year and may need to have some simple work done on an AR. (installing a comp, maybe a switch block as well). Is there a shop/smith around town that is known to be competent? I am trying to avoid going into a bubba gun shop and having my rifle screwed up.

Check out White Wing in north east Denton

http://www.whitewingweaponryco.com/products.html

thanks, I for sure had never heard of them before

Andrew Brady at http://lonestararmory.net/ south of Ft Worth.