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Old May 5, 2010, 05:50 PM   #12
Hkmp5sd
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Join Date: December 15, 2001
Location: Winter Haven, Florida
Posts: 4,303
I have one of the red M16 blank firing adapters shown above. It does have a hole down the center of the shaft, just as NavyLT says, with two ports out its sides just before where the shaft is threaded. The ports are about even with the edge of the red tab at the top of the picture.
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