Since I had to fix the fiber optic insert on my front sight, I tried using the green insert.
It didn’t pan out.
It just didn’t show up bright enough. Not enough to “draw my eye” to the front sight. After a few days of dry firing and working with it, it’s just not working to grab my eyes.
So I just changed it back to a red fiber. Much better.
That said, this isn’t me advocating red as better than green. My understanding is it’s truly a personal thing depending on how your eyes work. Some people work better with green, some better with red. So I’m glad I used the opportunity to figure out what worked for me, and it seems my eyes like red.