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Old August 13th, 2009, 01:02   #5
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Join Date: Jan 2007
Location: Saskatoon, SK
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What's with all the hearsay? "I think it does this", "I think I read about somewhere"

It's if you have a retarded long barrel (600mm+) you need a boreup kit to push enough air to fill up that long barrel and be efficient.

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