It's easier on the budget to buy a safe that fits all your firearms now, but it can be more sensible to plan for your future needs, as well. This can translate to more savings in the long run since it prevents you from purchasing another safe to accommodate new guns you'll be adding to your collection.

As for the interior, this is where things can get fancy. At the very least, there should be a soft lining to avoid dinging your firearms. But nowadays, you can play around with different customisations and even interior lighting.