hop up problems

it will not let me adjust it at all. i think the nub is gone. but im not sure. i have a cyma m14 with a reinforced hop up. so can any1 take a look at it for me??

Depending on what kind of gun it is I am sure I could look at it. Stick some BB's in there and crank the hop up all the way up and see if they fly up.. then turn it all the way down and see if they drop off. If that doesn't change anything then yes you may be in need of a new.

its a cyma m14. and it wont adjust at all. but its brand new. its not the stock one i bought a new 1 and stuck it in there