kjw usp
 

k
bought a kjw usp.
when i fired it with .2 gram bb's it was working fine, but eventually would curve down.
now when i fire it they curve up!!! im in the twilight zone of something.
when i looked for the hop up on the barrel assembly, there was no screw to ajust the hop up.
HELP?!?!
im a noob gbb owner

You did not read this, right? http://www.airsoftcanada.com/showthread.php?t=14505