The 5.7×28mm is a small-caliber cartridge developed by FN Herstal in the late 1980s. It was designed for use in personal defense weapons and submachine guns, offering a balance of low recoil and high velocity. This cartridge is known for its ability to penetrate body armor, making it popular among military and law enforcement agencies. The 5.7×28mm is primarily used in firearms like the FN P90 and FN Five-seven pistol. Its lightweight design allows for higher magazine capacities, enhancing the effectiveness of the weapon systems that utilize it. The cartridge has gained attention for its unique performance characteristics in various shooting applications.