-To address this he pointed to limited availability and "all of them are in the hands of the military"
-the problems with that is 1) "all of them are in the hands of the military" would be a consequence of regulation and 2) that isn't even true, unl;ess you use a very loose definition of military which amounts to "an organized group of individuals with arms"
So yes, logically it's a circular argument and a poor one at that
You might need to look up the word "dismissal". Being that directly addressing the argument and pointing out it's logical inconsistencies is would be "serious consideration". Not giving it "serious consideration and "dismissing" it. Would be rejecting the argument without pointing to it's logical inconsistencies and not directly addressing itThe only silliness is your dismissal of the logic.