Originally Posted by loafing_smurf
Although, I may want to install upgrades myself. I think if you take something like this seriously. You should know how it works and how to take care of it.
Is this the first time you will have owned an airsoft rifle?
If so, I would not suggest doing the upgrades on your own right away.
The KJW M4 is quite a bit easier to work on then any AEG I have worked on, but going into it blind could be hazardous.