ORIGINAL: Ruger-Redhawk
Last time I went to NAPA I was told they no longer sell etching primer.
Ruger Redhawk
Frank, I have usedVinegar on Galvanize, but not on Aluminum.

Hey, if you ever need Etching Primer or Paints, Sherwin-Williams have them! I use to buy it at Napa, but as yousay, theyno longer carry it!