The purpose of the high-velocity military version of the ammo was to penetrate body armor. Which is just one of the reasons it's used by many law enforcement agencies, including the U.S. Secret Service. Other advantages: Low and smooth recoil allows staying on long-range targets with ease and precision.

The Kel-Tec P50 is a FN 5.7×28mm semi-automatic pistol designed in the United States by Kel-Tec in 2021.

Kel-Tec does have quality control issues so making sure the gun is really reliable at the range is very important. But most problems can be easily solved by getting one box of every kind of ammo you can get your hands on and shooting them all to test for function and accuracy.

Cocoa, Florida Founded by George Kellgren in 1991 and based in Cocoa, Florida, the company has manufactured firearms since 1995, starting with semi-automatic pistols and expanding to rifles and then shotguns. Kel-Tec is a privately owned Florida corporation.

In general, the 9mm bullet will penetrate better than the lighter 5.7mm bullet. This means it should have more stopping power even though the 5.7 travels at 1,800 feet per second (fps).

Penetrates soft body armor with almost no loss of energy. Is stopped by the lowest level of ballistic protection. The 5.7x28mm NATO caliber was designed by FN Herstal.

Kel-Tec's PMR-30 was the most popular semi-automatic pistol in the United States, beating out Smith & Wesson's M&P9 Shield and Sig Sauer's P938.

50 Round P50. 5.7mm Semi-Automatic Pistol. 50 Round Capacity.

They manage to keep their prices down by minimizing the labor involved in production. Things like polishing parts and fine finishes are simply not done. They use CNC machines for metal and injection molding for the plastic parts.

Kel-Tec's PMR-30 was the most popular semi-automatic pistol in the United States, beating out Smith & Wesson's M&P9 Shield and Sig Sauer's P938.

Story highlights. An abandoned order of rifles, which are worth $200,000, is being donated to Ukraine by a weapons manufacturing plant in Florida. The Keltec, which is based in Cocoa, Florida, had earlier got an order for 400 9mm carbine rifles from a client in Odesa, Ukraine.

According to FN, the 5.7×28mm cartridge has an effective range of 200 m (219 yd) and a maximum range of 1,800 m (1,969 yd) when fired from the P90, and an effective range of 50 m (55 yd) and a maximum range of 1,510 m (1,651 yd) when fired from the Five-seven.