Cinder blocks face off against 20mm Hisso cannon (VIDEO)

Edwin Sarkissian and Mark Serbu amp up the 20mm antics by seeing how many good old concrete blocks a round can pass through.

Serbu’s 20mm, which he has been fooling around with since about 2012, uses what looks like 20x110mm Hispano-Suiza ammo, making it a pretty potent penetrator of all things smaller than an armored fighting vehicle.

But how many common cinder blocks does it take to stop it?