The Dark Diamond Front Sight Insert Firefly glow sights upgrade will swap out with any of our standard nylon front sight inserts, for all of our products. The Fireflies come in three different colors (coral, yellow, and aqua).
The Pyramid Firefly glow sight night sight upgrade will swap out with any of our standard nylon front sight inserts, for all of our products. The Fireflies come in two different colors (coral and yellow).
