VFC HK416 (GBB) + Polar Star = Possible?
 

Would it be possible to put a Fusion in my 416? I heard it has to be a AEG just want confirmation.

Thank you in advance!

The polar star is a Gearbox replacement.
However the GBBR 416 by VFC is a close clone of the WA/G&P system so it may be possible to put in a Daytona gun system

the P* drop in has the exact same dimensions as a v2 gearbox and installs the exact same way, grip included.

The outer barrel won't facilitate the installation of an AEG barrel and hopup unit.

So I'm pretty sure it's a no.

From the DG owners faq, straight from the fingers of the lead installer
"And yes, a HK416 has been attempted, but there is no documentation it ever worked"