FN 5.7×28mm - Wikipedia
https://en.wikipedia.org/wiki/FN_5.7%C3%9728mm
WebThe FN 5.7×28mm (designated as the 5.7×28 by the C.I.P. and FN 5.7x28mm NATO) is a small-caliber, high-velocity, smokeless-powder, rebated, bottleneck, centerfire cartridge designed for pistols and personal defense weapons (PDW) uses, manufactured by FN Herstal. It is similar in length to the .22 WMR and .22 Hornet.
DA: 87 PA: 52 MOZ Rank: 77