[masraum]

Originally Posted by BReif61

So the ceramic is breaking the bullet. The foam is just attenuating the energy. Also, the M2AP is an ancient round.

Not trying to belittle the progress in material science, just pointing out that this foam isn't performing miracles.

Well, it is pretty cool since it's foam. And I would assume, it's not necessarily ready for use in making tanks, but might be nice in certain applications. Also, if 1" does the trick with this old armor piercing round, maybe 1½" or 2" would stop your more modern rounds.