Will my AR15 work wet? How about if I spill a Coke on it? Whatever.
This video shows the AR15 being tested magazine after magazine on full auto until the gas tube melts. Even after the gas tube melts the rifle still works on semi auto.
The AR15 was never designed for sustained full auto fire. This is good illustration that the "dreaded black rifle" is tougher than some people think.
Make sure to send me a video if you decide to test your own rifle this way! email@example.com