Birchwood Casey Perma Blue 3 oz Bottle

Touch Up Steel Finishes on Your Rifle

Birchwood Casey Perma Blue provides an easy way to touch up bare steel on your AR-15 and more. If you have “scarring” on your barrel from home gunsmithing, or just scraped off some finish over time, applying this liquid will blacken bare steel to a more uniform finish.

How to Use

1. Safety first: make sure you’re using sterile gloves of some kind before handling Perma Blue.
   This is a corrosive solvent, do not let it come in contact with your skin.
2. Clean and degrease the surface you want to blue – isopropyl alcohol is a good option for this
3. Pour a small amount of Perma Blue into a separate container. Do not use the Perma Blue bottle or cap, as you’ll contaminate the solvent.
4. Dip a q-tip or other cotton swab into your separate container, and apply Perma Blue evenly on the surface of your bare steel.
5. Re-apply as needed to achieve the shade of black you need.
6. When you’re finished, wipe down your steel with a q-tip or swab, and ensure you dispose of any materials properly.