The Glock 17 Gen4 NIBX 9mm semi-auto pistol has a Nickel Boron Coated slide and Barrel. The Modular Back Strap design lets you customize its grip to adapt to an individual shooter's hand size. The surface of the frame uses the new scientifically designed, real-world-tested, Gen4 rough textured technology. Internally, the Glock17 dual recoil spring assembly greatly increases the life of the system and reduces recoil. The reversible enlarged magazine catch accommodates left or right-handed operators. The Glock17 Gen4 NIBX semi-auto pistol is an ultra-reliable handgun that is easy to learn how to operate and maintain, making it an ideal choice for self-defense, whether it be in the field, on duty, or at home.