Definitions by Anonymous
weedhead
Five-seveN
Designed as the sidearm to accompany the P90 PDW, the Five-seveN pistol by Fabrique Nationale uses the same 5.7 x 28 mm cartridge as the P90. Despite the bulky nature of the ammo, the 20-round magazine can still be fitted into a comfortably-sized grip. The pistol itself was originally a striker-fired double-action only one, although the "tactical" version introduced a single-action mechanism. Operating by the traditional Browning breech-lock method, the Five-seveN has very little recoil for a combat pistol, rougly 2/3 of a gun of equal bulk in 9 mm Parabellum. With a muzzle velocity of 2100 ft/sec, the Five-seveN is just as capable of piercing armor as the P90. And the capitalization of the N in "seveN" is undoubtedly a marketing gimmick on the part of FN.
Five-seveN by Anonymous August 9, 2003
neetu
P90
Manufactured by Fabrique Nationale, one of the top leading arms companies of Europe, the P90 is FN's answer to NATO's request for a compact Personal Defense Weapon system that will defeat armored targets, which in the modern battlefield is becoming more proliferous. A bullpup design, the P90 boasts complete ambidexterity, with ambidexterous fire selector, magazine release, and downward casing ejection. Most unique about the weapon is its 50-round magazine, mounted vertically parallel to the barrel, the cartridges are actually rotated 90 degrees in the magazine before entering the chamber. This round, the 5.7 x 28 mm (a necked-down 5.56 x 45mm), is being touted as the answer to kevlar-wearing opponents, being able to pierce 48 layers of CRISAT from a range of 200 m. With a dual-composition steel/aluminum core, the 5.7 will tumble upon penetration of soft tissue, leaving deep cavities up to 2-3 inches. Despite this, the relatively low muzzle energy and mass of the 5.7 round sometimes prove unreliable in terms stopping power against unarmored targets, unlike the venerable .45 ACP, or even the 9 mm Parabellum.