Cooking bacon on a Gemtech TREK 5.56mm. Firing a total of 90 rounds was all it took to heat the bacon on the suppressor. The video states he has a pre-1986 lower receiver, which was the last year that full-automatic capabilities were legal on M-16's in the United States.
And, here is a bonus video of YouTube star "FPSRussia" destroying things with an M60 machine gun, enjoy.