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bullet proof concrete?

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A friend of mine is asking me what kind of concrete would be equivalent to a UL 752 level 3 bullet proof rating, they are thinking of replacing  a compressed ballistic grade fiberglass roving with something cheaper in a new construction project. Perhaps some kind of masonry would also be an option… I am not familiar with hardened construction standards, is there a resource out there I could look at? Any experiences to learn from?