5.7x28mm



a premier calibur invented by fn (fabrique nationale) for two of their premier firearms : the five-seven and p90.
it is compact, yet powerful like a rifle round (able to pierce armor).
5.7x28mm is also illegal for citizens to possess because of its armor-piercing capabilities.

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Disclaimer: 5.7x28mm definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.