5 7 Pistol Round. The fn five seven pistol was developed in the early 1990s and features a cold hammer forged barrel that is chrome lined for extended service life. In 1990 fn completed development on the first 5 7 round designated the ss90.
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It is similar in length to the 22 wmr winchester magnum rimfire 5 7 27mm and to some degree similar also to 22 hornet or 22 k hornet. It used a 23 grain projectile moving at 2800ft s when fired out of the 10 4 barrel of the fn p90 developed at the same time. 4 75 inch barrel 3 20 round mags ambidextrous manual safety accessory rail 1 dot fron click for more info.
The polymer framed fn five seven offers single action operation low felt recoil 20 round magazine capacity and is equipped with an ambidextrous forward mounted manual safety and an accessory.
This is not a modified design of another product or pistol model. Packed into the five seven the sporting version of the 5 7x28mm round offers an effective range of 56 yards and a max range of 1 651 yards. The five seven pistol was developed in conjunction with the fn p90 personal defense weapon and the fn 5 7. Considering that 5 7x28mm caliber is reported to defeat body armor we decided to test it on a soft armor vest compared to 9.
