Ruger-57 PRO MODEL The Ruger-57 PRO is optic ready with a drilled and tapped receiver for easy installation of various optic plates. Impressive ergonomics include an easy trigger reach, robust slide release and reversible magazine release latch. Through hardened, billet steel slide with lightening cuts is drilled and tapped for easy mounting of optics with separately available optic adapter plate. Windage and elevation adjustable, serrated rear sight and rapid acquisition fiber optic front sight for fast, accurate shooting. The alloy steel barrel features a black nitride treatment for wear resistance. Steel magazine provides double stack capacity withou Mfg: Ruger