Feeding problem
 

Hello, I have a problem with my Echo1 M249. I installed a new hop up Classic Army and Tighbore barrel. When I try it nothing happens, no power in the hop up. Just hop up with the advances in the outer barrel barrel. I have an ammo box MAG. Someone can help me. Thank you

might be better if you ask in french, plenty of francophones here that could understand you better.

Are you saying when you adjust the hopup you get no lift in the BB?

did you remember to put the nub in?