Thank you all for the information. I didn't know most of it. Especially the fact that the M-4 can be more reliable than an AK in some conditions.

Now I have to see if we can get some muzzle caps and something other than a magazine to place in the magazine well. Range time too, few of the flight crews have fired the weapon on burst.

The thing that amazes me about all this is how people don't really seem to believe there is a war on, it can happen to them and they will try to kill you.