Airsoft Skorpion unboxing - box of bits puzzle!

Someone brought to me a Scorpion VZ61 in a box, in bits and told me that it didn't work. This is what I did to get it working again.

Background Music:

Jnathyn - Dioma [NCS Release]
Music provided by NoCopyrightSounds
Free Download/Stream: http://NCS.io/Dioma
Watch: http://youtu.be/r2Ig85ycGKQ