Kwa M11a1
 

I guess it will go in this forum. Can I adjust the hop-up of my ingram? Thank you. (if so how ;-) )

Yes.

The gun should come with a hop-up adjustment key, the same as on KSC/KWA GLOCKs. Rack the bolt. Around the rubber part that the bb's are pushed into when the gun is fired is a metal ring with slots. The key fits into the slot and you adjust the hop-up by turning it. Counterclockwise for more hop-up, clockwise for left. You should be able to manipulate it with your fingernail if you don't have the key.

Ok thank you... now I know what is the use fo that little key... :)