It doesn't screw into the barrel far enough to interfere with the porting.
Why doesn't he have one in the bottom barrel? I dunno, but it could be because he's a complete dummaz about firearms.
Questions:
What is the object at the end of the top barrel? Is is a bore reducing sleeve?
Notice the gas ejection from the right side of the barrel. It must be ported. If it was ported a barrel reducing sleeve would have to be ported too.
Some have suggested the object at the end of the barrel is a blank adapter. I have never seen one, but this is a double barrel action, no gas driven automatic. There would be no reason for a blank adapter.
Very strange photo, but it reveals a lot about Obozo.
It doesn't screw into the barrel far enough to interfere with the porting.
Why doesn't he have one in the bottom barrel? I dunno, but it could be because he's a complete dummaz about firearms.