Ruger Model 57, 5.7x28mm cal. auto pistol.  Serial #643-02966.  Excellent like new condition.  5" barrel has an excellent bore, fixed fiber optic front sight and adjustable rear sight.  Near 100% matte blue finish on the slide and barrel.  The slide has front and rear serrations.  Excellent black lightweight polymer frame with an accessory rail and integrated textured grip and straps.  Comes with lock, four factory 20 round magazines, two are still in the package, black composite belt clip holster and maker's hard case with correct label.  A real powerhouse of a pistol that's looks to have only been test fired.