How Bulletproof Are Bulletproof Vests?

How impermeable are bulletproof vests? HowStuffWorks takes a look at the reality.
Without question, they save lives — but they aren't 100 percent failsafe.

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Can military-level bulletproof vests withstand a .50 BMG? - Quora

How Much Does A Bulletproof Vest Cost? — 221B Tactical

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Accusations raise questions about bulletproof vests' safety

Firearms HowStuffWorks

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Bulletproof vests now part of EMS active threat response

Journalists need bulletproof vests during elections, IPC tells police

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If many people carry a gun 'just in case', wouldn't it be better to also wear a bulletproof vest daily? - Quora