Speer Gold Dot Ammunition is the first 5.7x28mm round specifically designed for self-defense. Like all Gold Dot ammunition, the bullet is built using Speer’s exclusive Uni-Cor method. The jacket is bonded to the core one atom at a time, virtually eliminating core-jacket separation and creating a projectile that’s accurate, tough and consistent through all common barriers. High-quality brass, reliable primers and specially formulated propellant produce optimal feeding and ballistics in most 5.7x28mm firearms including the FN handgun.