Will he actually be in any trouble over this? For one thing, he'll be a free agent; it's not as if he's presently under contract to a team that can withhold his pay or suspend him. For another, if you believe his story, he was at a shooting range. I don't know what Nicaraguan gun laws are like, but presumably, the guns owned by a shooting range are legal and licensed or, if the gun belonged to Padilla and he was discharging it at a public shooting range, it was equally legal and licensed.