FN Five-seven
The FN Five-seven (stylized as Five-seveN) is a semi-automatic pistol designed and manufactured by FN Herstal in Belgium. The pistol is named for the 5.7×28mm cartridge's bullet diameter, and the trademark's capitalization style is intended to emphasize the manufacturer's initials—FN. The Five-seven pistol was developed in conjunction with the FN P90 personal defense weapon and the FN 5.7×28mm cartridge.