Sight Calculator

Use this tool to find out how much shorter (or taller) your front or rear sight needs to change.

inches
feet
mm

What does this mean?

The number in the Results box represents how much shorter (or taller) your front or rear sight needs to change. If you are shooting LOW, then you need a taller rear sight or a shorter front sight. If you are shooting HIGH, then you need a shorter rear sight or a taller front sight.

AmeriGlo offers a variety of rear sights (plain black and tritium) in the following heights:
.256", .271", .287", .311", .393" (6.5mm, 6.9mm, 7.3mm, 7.9mm, 10.0mm)

AmeriGlo offers a variety of front sights (plain, serrated, white dot, tritium) in the following heights:
.165" (standard factory height), .180", .200", .220", .240", .260", .280", .300", .315", .330", .350"

You will need to know your current sight heights to correctly replace it.

  • The standard height of a Glock plastic front sight is .165". (measure only the sight blade)
  • Glock offers a variety of rear sights, indicated with a series of dashes. Glock refers to these heights as +0 (6.5mm), +1 (6.9mm)

AmeriGlo Sights

AmeriGlo sights are machined from US-made bar stock steels and assembled using Swiss-made tritium light sources.  We specialize in iron sights for small arms, designing our own sights and working with OEM gun companies.  AmeriGlo sights are used worldwide by law enforcement, military, defense-minded free citizens, and recreational shooters. Items on this site may be ITAR Controlled.  No exports, No foreign sales, No non-USA issued credit cards, No shipments to freight forwarders