I have read a lot of those uses and been quite surprised. I believe that I consistently get better results from Inox and to be honest I have never bought a can of 5.56. We used to get WD40 by the 5 litre at work and I used it to protect tooling. When we switched to Penetrene I thought it was better than the Wd40.
This is just my opinion and clearly someones buying it because they've been selling it a long time.
