Night Fision's patented injection molded sleeve design holds their tritium vials securely in place using ballistic materials. Night Fision night sights carry more tritium than the average night sight on the market and a domed lens engineered to create the a crisp, defined glow.
 
Additional Information
CNC Machined out of high quality steel
Domed lens collimates tritium rays for a sharper sight picture
Black Nitride coating used to improve wear and corrosion resistance
Perfect Dot Night Sights with added daytime florescent or phosphorescent ring