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Old November 3rd, 2011, 18:33   #3
GBB Whisperer
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Join Date: Jun 2002
Location: Toronto
PDI W-Hold. They're new, but I've gotten great results from them so far, and all my customers love them.

Has a v-notch, and improves seal via two thicker gauged bands to squeeze between the barrel and hop up chamber.
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