Ruger 57, Double Action, Semi-automatic, Polymer Frame Pistol, Full Size, 5.7X28MM, 4.94" Barrel, Black Oxide Finish, Fiber Optic Front and Adjustable Rear Sights, Ambidextrous Manual Safety, 20 Rounds, 2 Magazines, Ambidextrous 16401 • Action: Striker Fire • Capacity: 20+1 • Finish: Black Nitride • Sights: FT: Fiber Optic RR: Adjustable • Barrel length: 4.94 • Overall length: 8.65 • 1913 Picatinny Rail/ Robust Slide ReleaseVisual Inspection Port Picatinny-Style Accessory Rail Reversible Magazine Release • Double Action Only • Capacity: 20 + 1 • Finish: Black Oxide • Sights: FS: Fiber Optic/RS: Adjustable • Barrel length: 4.94" • Overall length: 8.65" • 15in Free-Float MLOK Rail/ Ambi Bolt Release