The flange is red Loc-Tited to the upper receiver (allow to dry overnight) then their barrel nut pushes the barrel into upper receiver. there's female threads on the inner side of the flange. The flange also has the holes that have the several screws that need also to be Loc-Tited (green/blue) to hold the tube to itself.



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- WillBrink /// "Comey is a smarmy, self righteous mix of J. Edgar Hoover and a gay Lurch from the "Adams Family"." -Averageman
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