Here's an easy way to color the engravings on your blued steel gun slide. It's cheap and easily removed. The wax from melted crayons will fill in the engravings and add some 'pop' to you gun. If you don't like it, you can heat up the slide and remove the wax with a cloth or paper towel.
I like this method over enamel or nail polish because it's fool-proof.
If you get sloppy, no problem - just heat it up and wipe it clean.
If you want to sell the gun - just heat and wipe.
If you want a new color - heat and wipe and re-apply.
Step 1: Required materials
The materials required are:
Crayon(s) - you can experiment with different colors, I chose white and grey
Stiff paper (I like playing cards)
Notebook or newspaper
Step 2: Field Strip Gun
MAKE SURE YOU FIREARM IS UNLOADED!!!!!
CHECK IT AGAIN!!!!!!
Remove all cartridges from the room and field strip the firearm. Consult your manual for exact procedure.
Step 3: Apply wax
Heat the slide using the lighter, being careful not to get any soot onto the slide. It's best to keep the lighter 1" from the surface. It won't take too much time to heat it up. Just heat the area to apply color so it's warm enough to melt the crayon. When it's hot, liberally apply the crayon, any color you like, making sure to fill in all of the engraving. It should completely cover the engraving. By heating the slide it will flow and adhere to the metal.
Step 4: Cool the wax
Stick it in the freezer for fifteen minutes or more. This will solidify the wax. The slide will cool slowly from convection and will not warp.