I have three of these (link) aluminum cases. They are intended for jewelry (you can buy the display trays that fit perfectly) but you could haul just about anything around in them. Might be cool with some foam to wheel pistolas to the range. Or just about anything else. They have dual combo locks that have not been set (instructions card inside). There is also a key that locks each of the hasps. Handle is retractable like wheeled luggage. They are brand new, maybe a little dusty from being in the garage, and one is still in plastic wrap. I’d ask $60 each or $150 for all three. I'm in NW Edmondish area.