Glow Dome Sights Feature 30% More Tritium Versus the Competition Night Fision Glow Dome Night Sights are designed to be durable and easy to use. Glow Dome night sights feature a patent-pending injection molded sleeve design which holds the tritium vials securely in place. Improving on that process they have developed a new lens and glow in the dark polymer ring with 30% more tritium in the vials than the competition. The housing in precision CNC machined out of solid steel and features a durable black coating. Glow Dome Night Sights provide you with maximum visibility in both day and night conditions. This particular listing is for the Front Sight ONLY. Night Fision Glow Dome Tritium Front Sight Specifications and Features: Night Fision GLK-000-001-GD-POGXX Front Sight ONLY Front Sight Green Tritium Vial Front Sight Orange Outline 30% More Tritium Than Competition Glow In the Dark Polymer Ring Glow Dome Lens CNC Machined Housing Black Finish Fits: for Glock 17/17L/19/26/34/43/43x/48 9mm Luger Models for Glock 22/23/27/35/24 .40 S&W Models for Glock 31/32/33 .357 SIG Models for Glock 37/38/39 .45 G.A.P Models for Glock 21/30/36/41 .45 ACP Models for Glock 20/29/40 10mm Auto Models for Glock 42 .380 ACP Model for Glock 25/28 Law Enforcement .380 Auto Models