Trouble with mk18 marui need help !

[An1kii]

Hi guys i've got a mk18 marui ngrs since like 2 years with not that much games with it and stock setting for everything except the battery

 

and ive got a trouble with it, it seems that if i put the hop up full or low it didnt change anything ive took it apart check it and double check it and everything seems good

 

can you know what could be the problem ?

 

thanks in advance

[george1976]

Have you looked to see if your hop unit does actually apply any presure down on the rubber? Is the nub in? Just be careful, don't get yourself blinded.

[Galvatron]

For the sake of clarity, what did you check and double check when you took it apart?

 

I assume you looked down the barrel with it and the hop unit to confirm the nub was pushing down the bucking as you increased the hop and it lifted off when you decreased hop?

 

What weight are you using?

[An1kii]

sry for long answering so yes ive already check the hop up unit and it seems to pushing well but just in case i change the hop up bucking for a FRICTION PRO from QUANTUM and i was shooting 0.28
the problem is still there like the first 5/6 shot goes well but right after it drop right away at like 20 meters i dont know what it could be