Wow. I could have SWORN that was a composite stock.
I see what you mean about carrying survival gear elsewhere on your person. I have a Black'S Creek lumbar pack that I've essentially turned into a survival kit.
When I talk of hollowing the stock, I'm thinking more about ammo somehow.
The more I think about, talk about, this, the more clear it becomes that, while the M6 and AR-7 "look" cool, and obviously would do in a pinch, a Model 24 in 20 ga is a better choice, especially if one can make it into a "project gun," and get exactly what they're looking for.