The Ameriglo SW141 introduces the i-Dot sights from AmeriGlo, showcasing a unique dot over dot design. The main features include a striking green single dot Tritium front sight, accentuated with a white outline and measured at .125\" wide. At the rear, it is complemented by another green single dot Tritium (devoid of any outline) which fits into a .180\" square notch, extending right to the end of the slide.This design not only gives a greater sight radius but also incorporates an under-cut face to eliminate any sort of glare. All AmeriGlo sights are remarkably crafted from US-produced bar stock steels, and incorporate Swiss-made Tritium light sources during assembly.