I guess he could be using some skimpy earplugs, but the look on his face says he's not...
http://www.youtube.com/watch?v=lWmg5bXvCW4
http://www.youtube.com/watch?v=lWmg5bXvCW4
guns are loud without earmuffs but not wearing them helps you hear if theres any people coming.
That thing runs faster than the M2s I have been around.
I shot 75 rounds through a Mosin Nagant M38...