FX Help with FX Panthera plenum valve tube end

[Barzor]

If anybody has replaced the plenum in a Panthera your help will be needed. I have a 22 Panther Hunter Compact that I am turning into a 30 cal slug with 600mm liner/barrel.
I bought the magnum xl plenum FX 21020 and is a complete kit with the valve tube end (FX 21004) with all the orings that seal the plenum and fills with air. I noticed when I took it out of the box it does not have the part that has the 2 screws to make sure the barrel housing is clamped down and also sealed. I was told that FX 21004 the valve tube end is the new part that replaced the old FX 20938. Apparently the new type held in place by friction and seals. I am surprised that the compressed air is held in by the new valve tube end by 2 orings inside this part nothing else, no clamp, nothing. Can someone explain how this is possible???

 

[Barzor]

If anybody has replaced the plenum in a Panthera your help will be needed. I have a 22 Panther Hunter Compact that I am turning into a 30 cal slug with 600mm liner/barrel.
I bought the magnum xl plenum FX 21020 and is a complete kit with the valve tube end (FX 21004) with all the orings that seal the plenum and fills with air. I noticed when I took it out of the box it does not have the part that has the 2 screws to make sure the barrel housing is clamped down and also sealed. I was told that FX 21004 the valve tube end is the new part that replaced the old FX 20938. Apparently the new type held in place by friction and seals. I am surprised that the compressed air is held in by the new valve tube end by 2 orings inside this part nothing else, no clamp, nothing. Can someone explain how this is possible???

I am guessing nobody knows the answer to my question?? However just me to clarify my long convoluted question… How does the part in the picture hold the compressed air in the plenum without the old style clamps of the previous version part. Apparently it has 2 rings inside.




I Can’t get hold of FX to ask but assuming that this is the new version this must make it more efficient or cheaper to make as well. The picture below is the old version, notice the clamp area where you put 2 screws.