Hi There!!
I'm a new member of the forum. I'would like to suggest a solution to the full-auto problem on the VFC 416...
I solve the problem by change the original cut off with a Marui (or Guarder)...
Look at the pics...
On the left there is the VFC original Cut-off - On the right there is the Marui...
for the battery, I use Intellect 2000@9,6... feets good in the an-peq and it's fantastic...