M855 VS AR500.

[@corycarlson8712]

I haven't heard of m855 defeating ar500 armour plates, but I have seen m193 burn through them. You get an imi 556 55gr going 3200-3300fps you will defeat a body armour plate at room distances. Otherwise you really need a true ap ammo. It's all about velocity, the sweet spot seems to be about 3150fps to defeat ar500 standard plates.