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Old November 9, 2012, 04:20 PM   #8
Senior Member
Join Date: September 22, 2012
Location: Marriottsville, Maryland
Posts: 944
I get a little worried about the longevity of my S&W AR-15, gas tube, because I shoot corrosive 5.45X39 ammo. So far... when cleaning the rifle, I've been spraying inside the gas tube, with high pressure brake cleaner fluid; and letting it drain out. So ill effects, on my gas tube.
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