Can anyone tell me what this grub screw does? Mine is currently loose; should it be tight? I searched the forums without finding anything.
Thanks,
Dennis
Thanks,
Dennis
FX FX Panthera grub screw #10; what does it do?
- Thread starter dennisu
- Start date
Kinda wondered the same thing. Probably just to keep everything aligned. I would not torque down on it.
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This grub screw is present on many air rifles. It is mearly a cover for the drilling the manufacturer made into the solid block to allow the passage of air from the valve to the ports in the barrel. It should have a thread locker on it as it never needs to be removed - well almost never. I pulled it on my Crown once to clear a major misloading jam I caused by not completely seating the barrel liner in the barrel housing.
Cheers,
Greg
My suggestion, if gun is degassed, uncocked, remove screw (it's loose anyway) & if you see top of Barrel at bottom of screw hole you'll know it's for securing barrel in place.
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Yep, not a good idea. You could screw up the edges of the brass transfer port hole on the barrel (if you have the dual transfer port barrel end). Also you could raise edges where the grub screw tried to turn into the brass, making it harder to pull the barrel out of the rifle.
Cheers,
Greg
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The two screws on the sides is for supporting the barrel / transfer port.
Raised edges would tear up the o-rings on removal of the barrel, so not a good thing in many ways.
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Thanks everyone for the information. Greg, I think you are spot on with your description.
Dennis
Dennis
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The top grub or set screw was so the transfer could be drilled in the receiver I don't remember if there is a flat spot on the barrel or not
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Most likely the same as previous FX gun, that’s the hole where FX drill the transfer port. The screw is a plug so just make sure it’s flush with kick tight like from the factory. Dynamic has 2 side screws to lock in/attach the barrel.
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