Quote:
Originally Posted by BrokenBird
I disassembled the gun, and I am left with the upper receiver and the inner barrel (I removed the RIS), at this point I have no clue how to remove the inner barrel.
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The cylinder against the upper has a hole in it. Put an allen key in it and turn ccw. That cylinder will unscrew.
Then firmly but gently grasp the inner and wiggle it out if the upper receiver.