The iFiber is a High Quality Fiber Optic Post made in 4140 steel in a Black Ionbond finish.
Measures 0.105" W x 0.180 H. Includes 2 red and 1 green fiber optics.
It is a professional front sight for those who want a narrower and taller sight than the factory fiber option. We also use a 0.040" fiber optic compared to the factory 0.060" which gives you a finer sight picture.
FYI the factory sights measure 0.125" W x 0.150" H.