The Ameriglo Hackathorn sight set is designed by Ken Hackathorn - one of the most respected pistol shooting instructors of his generation. A serrated black-out rear sight with a single tritium front sight ringed in bright orange. The combination keeps your eye drawn to the front sight (where shooting fundamentals live) instead of the three-dot pattern that splits your focus between two horizons. Features: Designed by Ken Hackathorn Rear: serrated black-out with U-notch Front: single tritium (green) with bright orange ring Steel construction, matte black finish Drop-in fit for Glock small-frame pistols Compatibility: Fits Glock 17, 19, 22, 23, 26, 27, 34, 35 (Gen 1-4) What you get: Front + rear sight set (no slide tool - sight pusher recommended for installation) Glock is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. 3CR Tactical is in no way affiliated with, sponsored by, or endorsed by Glock, Inc. or Glock Ges.m.b.H. 3CR Tactical is not authorized to sell or distribute Glock products.