How Effective Is 5.7x28mm?
The 5.7x28mm cartridge, developed by FN, offers high velocity and superior armor penetration compared to 9mm, capable of piercing Level IIIA armor at 200 meters with the SS190 round. Despite its technical advantages demonstrated in NATO trials, it was not standardized due to political disagreements. The FN PS90 bullpup rifle showcases unique features like horizontal top-loading magazines and ambidextrous ejection. The market for 5.7x28mm is expanding with new platforms from Ruger, Diamondback, and CMMG, alongside traditional firearms like the H&K SP5.









