My BOB is just that - a bag. Though admittedly, it's grown like some Hydra and comes with 2-3 other items now. One is a box of MRE's. Then there's some stashed food in the house that I could get if needed (assuming a car bug-out). I also have a plastic bin full of odds and ends (candles, matches, blankets, FAK, tampons, etc), again for a car situation.

But my actual backpack? No gun at all. Probably close to #30, none of that water, and a USGI gas-mask leg bag that's really a ditch kit in disguise (probably 2-3 more lbs).

Would I entertain a gun? I suppose circumstances dictate that. If it's a "every man for himself as aliens or zombies land" type of scenario, then probably a pistol of some sort. If it's a "civilization ending, make it to X, getting food as you go" then probably a rifle or shotgun. But a run of the mill hurricane evacuation or something? Nah...