Terry (Product Manager, Deep Fire) has sent over a bunch of YouTube videos. All videos are inset complete with links as you can also watch them in HD:
Dear my friend, Enclosed four video link for your reference :
AirsoftPRESS HD Tech Video: MP5 Assembly
AirsoftPRESS HD Tech Video: MP5 Disassembly
AirsoftPRESS HD Tech Video: MP5K Disassembly
AirsoftPRESS HD Tech Video: V3 Gearbox Upgrade
Regards, Terry (Product Manager, Deep Fire)