.357 Magnum. 4.675" barrel length. SN: 520-02189. Blued metal finish with polished hammer flanks mounting black synthetic Ruger logo grips and a flat top frame. Single-action loading gate revolver with six shot cylinder featuring Micro adjustable target rear notch and matted front blade sights. Left frame shows the two-line model and caliber marking RUGER .357 MAGNUM CAL./NEW MODEL BLACKHAWK. Top of the barrel shows a two-line gold engraved marking reading 50TH YEAR BLACKHAWK/1955 TO 2005. Left barrel shows standard two-line instruction manual and address marking. Comes in matching red synthetic box with the owner's manual, padlock in package, and factory test casing in package.