Jesus tapdancing christ, that thing is HUGE!!!! Forget kicking like a mule that thing must hit like a freight train on a down hill grade with a drunk engineer and a bad attitude.It doesn't get any more manly than the Anzio Ironworks 20mm:
To give you an idea of the size, yes that is a 50bmg round on the right in the first picture, and yes that is a Barrett M82 on the right in the first picture as well. There is an Anzio 20mm here in Austin at Sportsman's Finest, and seeing it in person it is indescribable! Barrett M82's are big as hell and heavy as hell, and the Anzio just completely dwarfs them.
I want one, and I don't even have a reason.