Pls lah, you question so undefined. Like wad kind of gun, use 50. caliber sniper rifle blast one big hole in the stupid stack of 10 crumplers. I think normal 5.56mm rounds aready can penetrate like more than half of it.
Or use gpmg, fire until the stupid crumplers pok. Or can use aircraft gun, the rounds are so dam ginormous, i think nth will be left of the crumplers. Anyway crumplers arent meant for this purpose.
If you want to satisfy your curiosity come here ask for wad, like anyone of us noe li tt. U wan go try yourself lah.

Then post the results here, not the other way round.