Fx Impact and hugget belita.

Hi everyone, just a little question about this setup.
I recently purchased a hugget belita for my 30 cal fx impact .
I tryied a couple of shots with the telescopic shroud retracted and with every shot the shroud extends . I just want to know if it is normal , maybe someone with a setup like this can answer me ...

Thanks
 
Hi
Its gonna happen the hugget is taking the full force of the air,whuch is then dragging the shroud forward,
Shoot it with the shroud fully extended only,i would pull the barrel off the gun ,extend the shroud with hugget fitted and look down the barrel for possible clipping issues as ive heard of alignment probs when the orings in the shroud become worn,ideally a one piece shroud is better for the use of a can.on the end
Rgds steve