So I was reading through another thread on here where a couple of people mentioned the Sig MPX. I was curious about it so I went to their website, and the first thing that pops up is a youtube video advertising the thing. They show the gun firing after being submerged in water, snow, sand, all of which seems pretty normal. Then they get to something called NATO mud? A quick google search gave me results that either go back to sig's website or to buy some Mud Grappler tires. Does NATO really have nothing better to do than to come up with a specific consistency of mud just to bury firearms in or is this just another marketing gimmick?