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Old 01-07-2013, 19:53   #16
Cool Guy
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Join Date: Mar 2003
Posts: 1,970
For the past 5 years I have used Mobile 1 20W-50 synthetic oil for my personal weapons, as well as used it on two deployments to Afghanistan. I have used it on all my personal weapons as well as my issued M4, M9, M249, M240B, M2, as well as a one time use on a MK19. It doesnt run like CLP and doesnt evaporate in the 130 degree temperatures.

Its against reg, but it did better than what I was issued.
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