Yes' date=' sure, but let's put this into perspective: Can of food: ~1kg Can of soda: 0.5kg M4: 2.9kg One magazine of 5.56: 0.2kg So, with an M4, 5 magazines, 2 cans of food, and a can of pepsi (or coke, whichever you prefer), you would already carry ~6.5kg around. In addition to your clothing, and not counting your backpack. I dare you to go to a pool and jump in in full clothing and with a backpack filled with stones. You WILL drop that backpack in order to not drown, trust me. [/quote'] Ok, I've gone swimming multiple times with all my kit and never dropped anything. I've had friends who did and lost all their stuff. My point is, that something that has no rhyme or reason but arbitrarily drops all your items at the bottom of the sea is going to lead to frustration. It should be one or the other, if at all possible.