MANUFACTURER: Ruger FAMILY: 57 Series MODEL: Ruger-57 Pistol TYPE: Semi-Auto Pistol ACTION: Semi-Auto CALIBER/GAUGE: 5.7 x 28mm FINISH: Black Oxide FINISH TYPE: Black FRAME: Polymer Frame STOCK: Polymer Frame BARREL: 4.94" OVERALL LENGTH: 8.65" DRILLED / TAPPED RATE-OF-TWIST: 1-in-9 CAPACITY: 20 + 1 # OF MAGAZINES: 2 MAG DESCRIPTION: 20 rd. Steel Magazines SIGHTS: FS: Fiber Optic/RS: Adjustable SIGHT TYPE: Adjustable Sights WEIGHT: 24.5 oz. SAFETY FEATURES: 1911-Style Ambi Manual Safety ADDL INFO: Visual Inspection Port ADDL INFO: Picatinny-Style Accessory Rail ADDL INFO: Reversible Magazine Release MFG MODEL NO: 16401 UPC: 736676164011