Depending on your definition of "heavy", good fire protection may not be viable. Unfortunatetly, weight and fire protection tend to run hand in hand...ScubaSigGuy wrote: Good fire protection
Not too large and heavy
You probably should decide how many weapons you want to secure, and the mix between handguns and long guns. My suggestion is to allow for future additions. I didn't, and I ended up with a safe that's too small.
The combination of number of weapons and fire safety time will zero you in on a range of safes.