Polarstar f2 receiver recommendations

[adamjudge6]

Hi all,

 

I’m going to be building a DMR/SPR/Reece Rifle from an m4 base.

 

I have a polarstar f2 engine to install in whatever body it is I buy,

 

what brand metal receivers often give the best alignment whilst still being good quality without skimping out.

 

has anyone put the f2 into a g&p vltor receiver, how would it fit, are they good quality etc (picture below)

 

thanks

adam

[Steveocee]

VFC as that's what P* design around.