Board Thread:General Nerf discussion/@comment-29595756-20170517015744/@comment-27306930-20170524015456

When you cut off the Air Restrictor assembly, you're essentially left with two concentric ring shape structures, supported by three stanchions. One side mates with the plunger tube, the other with the narrower barrel. I simply filled the void in between with JB Weld. In fact I just smushed a whole bunch in there, not trying to be perfect. At this stage is doesn't matter anyway.

When dry, I redrilled a half inch hole down the center, then used the Dremel to create the gradual curvature that forms the Venturi "shape". It doesn't have to be perfect, and it doesn't have to be super smooth. Remember, it's not a scientific instrument - close is good enough.

Dry fit the pieces to make sure it goes back together properly. Then reinstalled it between the plunger tube and barrel, and screw the whole thing back into the FireStrike. You're done !