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Tritium Night Sights vs. Fiber Optic Sights

Tritium Night Sights vs. Fiber Optic Sights

Posted by XS Sights on Apr 23rd 2021

Tritium night sights are commonly compared to fiber optic sights when shooters are making upgrade decisions on their pistols. Everything in life has a pro and con list; there is no magic bullet that provides the perfect solution. We at XS strive to drive the messaging that guns and accessories are purpose-driven tools. Tritium night sights are built for durability and visibility in low light. Fiber optic sights are built to be highly visible in bright light, making them an excellent option for sport shooting.

Tritium Pros.
Our tritium sights glow in low-light, use high-contrast glow dots to provide high visibility in bright light, and are extremely durable. Our sights glow for over 10-years, have a 25K+ round service life, drop safe, and survive aggressive cleaning agents that contain Acetone. The safety requirements for tritium are rigorous, and most sights are CNC machined for accuracy. CNC machined parts are made from good quality metal and are very durable.

Tritium Cons.
Tritium is expensive, translucent in bright light, and glow intensity dims over time (10 to 12 years). The sight designs need more steel to surround the circumference of the lamp for protection, making the sights taller and wider than conventional sights.

Fiber Optic Pros.
Fiber rods illuminate well in bright light, offer many diameter options, and color options, have easy to change rods, and are low cost. Fiber optic sight bodies do not have a lot of coverage because the walls of the rod need to be exposed to ambient light to provide the high visibility glow in bright light. These qualities make the sight bodies low profile. They tend to be metal injection molded because of the simple design which drives down the cost.

Fiber Optic Cons.
Fiber Optic Sights work only with bright light, even cloud cover can reduce the apparent brightness of the sight. The fiber rods are fragile, and they will not hold up to multiple drops or high round count shooting. Manufacturers solve the fragility issue by including a few inches of extra rod. The rods are easy to replace, but if the rod breaks while shooting, you have to switch to focusing solely on your sight blade. Fiber optic rods are not resistant to cleaning solutions. Acetone will bleach the rod, and the heat from ultrasonic cleaners can melt the rod.

Fiber optic rods glow brightly in bright light settings because the rod gathers light and funnels it to the rod endpoints. The longer the rod, the brighter the sight, but the fragility also increases. In low light settings, the rod is no longer visible and does not glow.

A common misconception when comparing tritium sights to fiber optic sights is "If it's too dark to see my sights, then I need a flashlight to identify my target, and the ambient light will illuminate the fiber." Below are a few examples of flaws in that logic:

  • Fiber loses its bright illumination quickly in decreasing light levels.
  • In a defensive situation, your attention needs to be on the threat; hoping ambient light will illuminate the fiber rod when you need it is not the right mindset for that moment.
  • In dark-light settings, your eyes have adjusted to the dark and can see quite well. Our eyes do not adapt to rapidly changing light levels quickly like the bright shock of a flashlight.
  • Tritium sights are not an alternative solution to flashlights in a dark-light setting where you can't identify your target. They are meant to be used together. Proper low light tactics are meant to minimize your light exposure and not identify your position to the threat, while still being able to index your front sight.

Tritium night sights are great for low light and defensive shooting. The large footprint sight bodies make finding the front sight quick and easy. They are also continuously illuminated. Fiber optic sights are great for sport shooting; the small diameter rod allows for greater precision shooting, and the rod lights up like a light bulb when outside.

While we have beliefs in our tools and tactics, we admit there are multiple tools in the toolbox that can accomplish the same goal; with the appropriately skilled person. Be sure that you have the right tool for the job. Knowing these pros and cons, while considering your most frequent or anticipated shooting situation and the intended use of the particular gun setup will help you to make an informed decision about which tools are right for you.

About the Author
XS Sights manufactures the fastest sights in any light. From concept and design to creation, XS utilizes tritium, photoluminescent materials, and 20+ years of sight manufacturing expertise to create highly visible and durable sights for personal defense, military, and hunting applications. Proudly made in U.S.A.