RE: Vinegar?
Went to the range this morning. Upon returning, I decided to compare the Windex with Vinegar mixed with rubbing alcohol to the window washer fluid mixed with rubbing alcohol. Couldn't really tell any difference. Cleaned one gun with solution A and one gun with solution B. Once each was showing clean patches, I tried a patch of the other solution in each gun to see if I could get additional nasties out of it. Both came out clean.