The FN Five-seveN (often stylized as FN 5.7) is a semi-automatic pistol designed and manufactured by FN Herstal in Belgium. It is notable for its use of the 5.7×28mm cartridge, which was developed to penetrate body armor, making it a high-velocity, low-recoil firearm.
Um, and then a few of my friends got killed with these FN57 pistols that come, it's a it's a high velocity round that comes in them.
""The speaker explicitly mentions 'FN57 pistols' and describes their high-velocity rounds, indicating a specific, branded firearm model that was used to kill his friends."