Ahhh, but then they qualified it:
"military grade ballistic armour that is strong enough to stop an armour-piercing bullet, gunfire from an AK-47 or the destructive force of a hand grenade."
Nothing about anti-tank gun rounds, artillery or heavy machine gun fire. FWIW a hand grenade isn't supposed to have a whole lot of destructive force. It's only got 6 oz or so of Comp B.
I just <3 marketing language! Not!
