The Ruger-57 is the American-made challenger to the FN Five-seveN in 5.7x28mm, offering a 20-round capacity, fiber optic sights, and a striker-fired polymer frame at a price point significantly below the Belgian original, making the 5.7x28mm cartridge accessible to a wider audience. Type: Semi-Automatic Pistol Action: Striker-Fired Caliber: 5.7x28mm Capacity: 20 Year introduced: 2020, USA Weight: 24.5 oz Overall length: 8.65" Status: Active Intended use: sport, self_defense, competition