I have seen some of this, not only on glocks but any weapon... Finger nail paint in the engravings. Looks cool? lasts long? dont know dont really care just some what curious. If anyone has this id sure like to see some cool pics.
Painted mine about 3 weeks ago and 200 rounds through it and it's held up, very easy to do so if it ever did come off or dull not a big deal. Make sure you use NON ACETONE nail polish remover if you do it or it will mess up your slide finish.