FN America FN DFNS SS200 Personal Defense Handgun Ammunition 5.7x28mm 30gr JHP 1894 fps 500/ct Case 7EFF1127 RJ. 7x28mm caliber standardized in 2020 by NATO was originally designed in the late 1980s for use with the military issued FN P90 and FN Five-seveN pistol. With three decades of trusted use the 5.7x28mm drastically improves range accuracy and terminal performance from small arms with the hyper velocity bottleneck pistol cartridge. Specifications for FN America FN DFNS SS200 Personal Defense Handgun Ammunition 5.7x28mm 30gr JHP 1894 fps 500/ct Case 7EFF1127: Manufacturer: FN America Caliber: 5.7x28mm Features of FN America FN DFNS SS200 Personal Defense Handgun Ammunition 5.7x28mm 30gr JHP 1894 fps 500/ct Case: Caliber standardized in 2020 by NATO Originally designed in the late 1980s Designed for use with the military issued FN P90 and FN Five-seveN pistol Improves range accuracy Improves terminal performance Hyper velocity bottleneck pistol cartridge Package Contents: FN America FN DFNS SS200 Personal Defense Handgun Ammunition 5.7x28mm 30gr JHP 1894 fps 500/ct Case The 5.7x28mm caliber standardized in 2020 by NATO was originally designed in the late 1980s for use with the military issued FN P90 and FN Five-seveN pistol. With three decades of trusted use the 5.7x28mm drastically improves range accuracy and terminal performance from small arms with the hyper velocity bottleneck pistol cartridge. RJ10700029