I have an aero epc set that I am currently building. Plan is to use the QC bolt and 10.5 barrel

Who here has experience with the Vltor A5 extension and their pcc A5 buffer?

I would like to know what baseline I should start with when using the Vltor A5 pcc setup.

Which weight buffer should I start with and can I use a sprinco green spring?

I would like to use their system since they are local and I have experience with the A5 on my carbines.