laser etching/engraving

I am looking for someone on the SW/W side of Houston that does laser etching. I am looking into getting some stuff etching on my AR lower reciever. I have have some that can do rotatary engraving but was told that the laser etching are able to do what I need in the trigger area rather than on the side of the reciever. Also have a guy in Austin area but was hoping to find someone clsoer to home.