The FN 5.7×28mm ammo for sale (designated as the 5.7×28 by the C.I.P. and FN 5.7x28mm NATO) is a small-caliber, high-velocity, smokeless powder, rebated rim, bottlenecked centerfire cartridge designed for handgun and personal defense weapon (PDW) uses manufactured by FN Herstal. It is similar in length to the .22 WMR (5.7×27mm) and to some degree similar also to the .22 Hornet or .22 K-Hornet. Unlike many new cartridges, it has no parent case; the complete package was developed from scratch by FN.
The 5.7×28mm ammo was developed in conjunction with the FN P90 PDW and FN Five-seven pistol in response to NATOrequests for a replacement for the 9×19mm Parabellum cartridge.In 2002 and 2003, NATO conducted a series of tests with the intention of standardizing a PDW cartridge as a replacement for the 9×19mm Parabellumcartridge.The tests compared the relative merits of the 5.7×28mm cartridge and the 4.6×30mm cartridge, which was created by Heckler & Koch as a competitor to the 5.7×28mm. The NATO group subsequently recommended the 5.7×28mm cartridge, citing superior performance in testing, but the German delegation objected and the standardization process was indefinitely halted.
By 2006, FN’s 5.7×28mm firearms—the P90 PDW and Five-Seven pistol—were in service with military and police forces in over 40 nations throughout the world.In the United States, 5.7×28mm firearms are currently used by numerous law enforcement agencies, including the U.S. Secret Service.
In addition to being used in the FN P90 and FN Five-seven firearms, the 5.7×28mm cartridge has subsequently been used in a number of other weapons, such as the AR-57 and FN PS90 carbines. Excel Arms has developed four firearms chambered in 5.7×28 ammo, MasterPiece Arms offers three different firearms in 5.7×28mm., and CMMG offers several of its AR-Style Banshee firearms in buy 5.7×28.As of December, 2019, Ruger offers its Ruger-57 semi-automatic pistol chambered in this cartridge.January 2021 saw the announcement by Kel-Tec of the P50handgun, which uses 50 round P90 magazines.
The 5.7×28mm cartridge itself is produced in a number of varieties, two of which—the SS195LF and SS197SR—are currently offered by FN to civilian shooters.
Specifications for Federal Premium Centerfire Handgun Ammunition 5.7x28mm 40 grain Full Metal Jacket Centerfire Pistol Ammunition:
Number of Rounds: 500
Bullet Type: Full Metal Jacket (FMJ)
Bullet Weight: 40 grain
Muzzle Velocity: 1655 ft/s
Primer Location: Centerfire