And just happens to also be the major component in Windex
No, it's not. MSDS for Windex: <broken link removed>
Hazardous Components: Isopropyl alcohol 1-5%
If you're buying Windex you're wasting money for the coloring and prefume vs. soapy water, which is all that's really needed to clean after shooting corrosive ammo. I've run thru several cases of Yugo M67 (which is excellent ammo) and have had no rust problems.
After shooting, I clean anywhere that has gas fouling with soap water and a brush, dry, and then oil. I've done this in the rain and packed the rifle away wet in the case. After I got home I had to dry the AK but I didn't have any rust.
H