GSG9 -
For the $300 or less category, you're pretty much down to Homak, Stack-on, and Sentry. Now don't take this the wrong way, but maybe you should consider selling off one of your guns to help finance a better safe to protect the rest of your collection. Just consider how much your collection is worth now...and how much it wil be worth in a few years as you keep buying new toys to put into it. Most, if not all, of those thin sheet metal cabinets can be popped into with a crowbar no matter how many locking bolts they have. If you could get another few hundred into your safe budget, you could get something that will give you much better protection against theft and possibly fire. For about $800 you can get a Remmington safe with fire protection, 20 cubic feet interior, and a 1" door. Yeah, it would suck having to sell a gun, but it would REALLY suck to have everything stolen from a lower quality safe.