As many by now may know, our green and yellow fireflies appear similar
in color, just out of the package. Once exposed to sunlight the yellow perks up and
becomes a bright yellow. The green perks up a little and both, in the presence of
sunlight, become more distinctive from each other. The glow colors, in darkness, are
very similar, though the green appears slightly more blue/green, while the yellow takes
on a green hue.
As an aside, glow color in a tactical situation is irrelevant, because the only pressing
issue is to clearly see a big glow. Perhaps it’s just me, but I perceive the blue/green
of the green firefly to glow a little brighter than the yellow, though the glow duration's of
both are the same. So how do I use each? Well, here’s what I do:
For a good all-around firefly color, I choose yellow. I put the yellow firefly on my longer
barreled pistols and I now shoot action competitions with the yellow firefly exclusively.
The picture of my XD 45 tactical is one I enjoy shooting in competitions. I find it very
fast at close range and, once you get used to the completely colored firefly, compared
to the standard nylon front sight inserts with their darkened portions, I find it just as
precise for the longer shots. It certainly is a good all-around day and night sight.
When it comes to a smaller carry pistol, like the pictured magnificent TMT Tactical
Glock 26 that was, by the way, featured on the cover of the Jan/Feb edition of American
Handgunner, I prefer the green. The green firefly seems very prominent in both the
non-glow and glow state on a shorter barreled pistol. What appears to me as being a
slightly brighter glow serves me well at the end of a glow duration where a little extra
brightness is appreciated.
An interesting side note is that, at first, I had a little trouble in the transition from our
standard nylon inserts to our firefly insert. It seemed that the completely colored firefly
was a little more awkward to align for a precise shot, when compared to our nylon
inserts where only the sighting (pentagon) portion was colored. However, this was all
temporary. Now, I align the fireflies for all shots just as fast and maybe even faster. In
fact, now that I’ve been exclusively using the firefly, I find that I miss the big color when
I'm using our standard front sight inserts.
All the above are just my own perceptions. As the firefly usage propagates, we should
get more feedback from users, concerning color and usage preferences. Soon, I’ll write
about the advantages of our standard pentagon nylon inserts vs the firefly. Both seem
to have their places.