I am working to set up my ZKK 602 for an African hunt with Cape Buffalo on the menu. My primary sight is a 1x5 scope with QD rings but I'd like the original iron sights to be useful for backup if needed. I have cleaned the front sight and it has a silver end attached to it but is not very legible. I was thinking of adding a dab of fluorescent orange paint to it but I would like to get some input from people in the know as I'm guessing here.
Try KG Site Cote.
Available from big online gun supply retailers.
I've used both Red and Green, I prefer the Green, but many like the Orange.
It is much more visible than a canned spray paint like Krylon. The fluorescent pigment is easily visible.
Like any paint job, surface preparation is important, as noted below, I used 99% isopropyl alcohol, then acetone. Shake the bottle for a few minutes, it has a small ball bearing that mixes well.
The needle applicator works well on a small bead front. Instructions says dries in an hour, but I cure mine overnight.
After application, immediately clean the needle tip with acetone, or odorless mineral spirits and screw on the cap. It will dry out in a few months, but this gives some shelf life.
Really good paint that is visible in hunting conditions.