It does indeed (answering another poster) look like an Oleg Volk, who is very generous about the use of his work (but it should have attribution on it somewhere, OR they paid him for it).
As a transplanted Texan, I am proud to see that and know it's in Austin. As a gun rights advocate, I'm thinking I should look into what it would take to get one or more of those put up in Concord, where the state legislators would see it when they drive in to work ... hmmm ...
Thanks for posting that! I hope you post the new one, each month!