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I take along a Large bottle of Isopropyl alcohol and after a 30 round mag or a 3 round group, I will soak an old rag and rub the barrel. Alcohol evaporates much faster than water and will not rust metal, and it only takes about a minute to cool a scorching hot mini-14. Has anyone else ever heard of or tried this?
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You may want to look into this first:
http://www.osha.gov/SLTC/healthguide...cognition.html