Primer's

AK Interactive

AK Interactive Primer and Microfiller

Needs AK Interactive - 100ml Extreme Cleaner (see below)
Dries quickly in the airbrush if not careful
Dries very quickly on the model
Matt finish
Tough once dry

As featured in the Video:

AK Interactive - 100ml Extreme Cleaner (For Extreme Metal Colour range)

As featured in the Video:

Vallejo

Vallejo Mecha Primer (available in Black, Grey and White)

Needs thinning before using in an airbrush
Needs approx 24hrs to cure
Tough once cured
Smooth satin finish
Black works very well under metalic colours

As featured in the Video: