|Weapons cleaning Al Asad airfield Iraq 2004, Awaiting C-130 to Kuwait|
lube and put it away. the next morning I turned it in with no problems even though they use a Q-Tip to inspect it and probe any spot they think was missed.
In Iraq we took our weapons everywhere, even to the shower so I would routinely open it up in the shower and rinse all the red dust out, it was so arid it would dry quickly so I would oil it lightly, swab the barrel and it was good to go.
Additional Note: Water will not hurt anything on an AR as long as you dry it. The places to watch would be the buffer spring and the bolt. They could be taken out if needed. Remember, they were designed to be used in jungle weather, rain and river crossings.
Interesting footnote, This is the M16 A1 I carried in Iraq, it was a Vietnam era arsenal rework, It was issued to me right out of the crate from rework facility. It is marked Colt AR15, (not M16) Property of US Government. It's hard to see but the selector switch has 'auto' on it. It did have the forward assist and the barrel was an upgrade. Almost all Marines and Soldiers had the 3 round burst and they found this 'full auto' one a novelty.