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The 5.7×28 was developed in conjunction with the FN P90 PDW and FN Five-seven pistol in response to NATO requests for a replacement for the 9×19mm Parabellum cartridge. In 2002 and 2003, NATO conducted a series of tests with the intention of standardizing a PDW cartridge as a replacement for the 9×19mm Parabellum cartridge
.The tests compared the relative merits of the 5.7×28mm cartridge and the 4.6×30mm cartridge, which was created by Heckler & Koch as a competitor to the 5.7×28mm.The NATO group subsequently recommended the 5.7×28mm cartridge, citing superior performance in testing, but the German delegation objected and the standardization process was halted until 2021 when it was officially adopted as a NATO standard STANAG 4509.
The 5.7×28 cartridge was designed in response to NATO requests for a replacement for the 9×19mm Parabellum cartridge. According to the NATO requirement, the new cartridge was to have greater range, accuracy, and terminal performance than the 9×19mm cartridge. Additionally, it was to be capable of penetrating body armor. FN Herstal responded to the NATO requirement by developing the 5.7×28mm cartridge and two associated weapons: the FN P90 personal defense weapon (PDW) and FN Five-seven pistol.
The original 5.7×28mm cartridge, called the SS90, was introduced in 1990 It used a 1.5 g (23 gr) plastic-core projectile, which was propelled at a muzzle velocity of roughly 850 m/s (2,800 ft/s; Mach 2.5) when fired from the P90.A United States patent application for the projectile design used in the SS90 was filed by FN’s Jean-Paul Denis and Marc Neuforge in 1989. U.S. Patent 5,012,743 (“High-Performance Projectile”) was received in 1991.
When fired from the FN P90, the 5.7×28mm SS190 can penetrate the NATO CRISAT vest or a Level IIIA Kevlar vest at a range of 200 m (219 yd).