The unique caliber, 5.7x28 (basically a short .223), offers penetration like the .223 but enhances magazine capacity and lowers recoil, muzzle flash, and muzzle blast. With a 50-round magazine, light 5.7-pound empty weight, and the option of single shot or full auto fire, the FN P90 is a unique weapon for a unique job. An entry-weapon extraordinaire, the compact size yet "full power" round deserves a hard look.
The 5.7x28 SS190 ammo, due to its unique design with two inserts, causes the bullet to tumble in soft body tissue after two inches of penetration. The SS190 virtually eliminates the risk of over- penetration.
The SS190 will penetrate 48 layers of Kevlar at up to 200 meters when fired from the P90 and can achieve the same results at up to 50 meters with the FsN handgun. Additionally, the 5.7mm ammunition has only 60 pecent of the recoil impulse of a 9mm. There are four types of ammunition available: the duty SS190, a tracer, a subsonic, and a training round.
Muzzle velocity of the SS190 is 2,346 fps when fired from the P90 and 2,133 fps when fired from the Five-sevN pistol. Really "stepping out" for a pistol round.
The Five-seveN Pistol is the companion weapon to the P90 submachine gun. The Five-seveN is a double action pistol with a 20-round magazine. Maximum use has been made of composite materials in the frame and slide resulting in a 1.7-pound design. The high velocity of the SS190 ammo, even from the pistol, means it can defeat most soft body armor. Remarkable performance in a handgun.