Innovation is the hallmark of FN and is clearly represented in cutting edge designs like the 5.7x28mm FN P90 Personal Defense Weapon, PS90 semi-automatic carbine and FN Five-seveN pistol. The 5.7 round is taking the country by storm as the fastest growing craze in the shooting sports. Low recoil, lightweight and very flat shooting. 5.7 ammunition was originally designed as a military replacement for 9mm sub-machine guns favored by may NATO units. The 5.7x28mm round is dimensionally the same bullet as the 5.56mm / .223. Typically most bullets and ammunition will range in the 28-grain to 40-grain weights. While there are many varieties of 5.7 ammuntion made (SB193 Subsonic, SS190 Ball, SS191 Tracer, SS192 Training 28-gr JHP, SS195LF Lead Free, and SS197 V-MAX), only the SS195 and SS197 Hornady Vmax are available as sporting ammunition to the general public.