If his lawyer is worth a shit, he'll fall back on the 2nd ammendment and it won't matter. Technically unless this guy confesses to something all they probably have right now is a carry permit violation on the handguns IF he doesn't have a permit. Maybe for the long guns when they were in the case depending on the state and the closing mechanism of the case.
GA is an open carry state no permit required for long guns. Concealed carry with a permit. You can carry there with a round in the chamber. Body armor is legal there.
By their laws this is pretty close to acceptable trip to the grocery store until some further information is provided. If he has the carry permits the ski mask may be the most illeagal thing he had on him. It may be the key to proving the intent to commit a felony.
https://gunlawsuits.org/gun-laws/georgia/open-carry/