I would have to opt for the M-79 with 20 rounds of Willy Pete.

It will provide a nice warm fire while I await the arrival of the: ATF, FBI, DHS, USA, USANG, USMC, USAF, USFS, and every other government agency that can make a claim to defend us from terrorists,,,,and I know that they will bring all kinds of fancy cop equipment with them, taking 8x10 color glossy photos of my approach that got me lost, the north, south, east, and west views of my "waiting for help site", etc.etc.

With any luck, I'll even get a blind judge with a seeing eye dog who won't be able to look at the 8x10 color glossy photos.