I did a couple of AR-15 80% lowers in the raw recently. Followed the directions by scrubbing with a sotchbrite and detergent. Followed with a good rinse, then a good wash with 91% isopropyl alcohol. Let dry and applied the blackening with a foam brush. I am not very pleased with the final product. Anyone have any hints as to flaws in my procedure? Thinking maybe acetone or mek degreaser? Or maybe sandblasting is needed first?
