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 complete sight set. Night Fision Glow Dome Tritium Sight Set Specifications and Features: Night Fision GLK-002-007-GD-POGZG Front Sight Set Front Sight Green Tritium Vial Front Sight Orange Outline U Notch Rear Rear Sight Green Tritium Vials 30% More Tritium Than Competition Glow In the Dark Polymer Ring Glow Dome Lens CNC Machined Housing Black Finish Fits: for Glock 21/30/36/41 .45 ACP Models for Glock 20/29/40 10mm Auto Models Note: Compatibility with the for Glock 44 .22 Long Rifle slide is unknown at this time.