I am not a lawyer, but I did read Chapter 46 of the Texas Penal Code, and it appears that the Shockwave, and other similar weapons, would not be legal in Texas, as the law is now written. I would be able to possess one, as a Texas Peace Officer, as indicated by 46.15, but PD policy applies 24/7, so it would have to be a mere range toy; my chief specifies 18" to 20" barrels, and stocks, must be on any shotgun I will use to defend myself or others.