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What Can Stop A 9Mm Bullet? [Solved]

Steel is the go-to for bulletproof materials; it’s heavy-duty and just a few millimeters thick, yet still stops modern firearm rounds. Ceramic is also popular, as it’s lightweight and can be molded into any shape. Fiberglass is another option, but it’s not as strong as steel or ceramic. Wood can be used too, but it won’t stop high-velocity rounds. Kevlar and polyethylene are both lightweight and effective against most bullets, while polycarbonate offers superior protection against high-velocity rounds. Wow!