Glock 17 Gen 4 9 mm Improvements•Reversible Magazine Catch•Textured backstrap options.•Improved guide rod and spring.•Magazine improvements Specifications:•Caliber: 9mm•Action: Safe (D.A.O.)•Length (Slide): 6.85"•Length between Sights: 5.98"•Barrel Rifling: Hexagonal Profile with Right Hand...