Hello, im sort of new to the airsoft community. Having said that I'll get to the point, I purchased a Kalashnikov ak 47 awhile back. I played maybe 5 games when mid firefight my gun made a rushing bb sound and has not Fired since. I was wondering if there are any diagrams for airsoft guns so I may teach myself how to disassemble my guns, perhaps even upgrade them internally so on and so forth. Thank you for your time.