What we REALLY need is a thread about the horrors of steel-cased ammo in AR rifles. I don't think that's ever been discussed.
I must be the only guy who thinks there's nothing wrong with shooting steel-cased ammo through my ARs (or other guns). And I shoot it by the metric shit-ton when I can find it. I shoot Wolf through my Kimber and Colt 1911s, too. And I clean my guns with whatever solvent I happen to have open at the time and lube them with whatever oil happens to be available. And I can't remember the last time I ever had a problem with one.
If I were you I'd get the least expensive gun oil I could find and use that. The only difference is you may have to use it a little more often...but so what. Maintain them properly, use a lubricant of some sort and shoot the hell outta them.
Personally, 1) I think people really over-think this stuff and, 2) marketing hype and internet myths are wonderful things.