VFC Barrel Nut - Tools and Torque

[LzChase]

Short question, I need to shim my barrel, does anyone happen to know a barrel nut wrench that fits the VFC HK416 series? The barrel nut is real spec diamater, however an HK wrench is impossible to find around here. I would also like to know what the torque spec for said barrel nut is if someone happens to know. From experience, I have removed a damaged one using a pipe wrench once since it was already broken, and it was really on there. There was no glue on that particular one, it was just torqued down a lot.

 

[Enid_Puceflange]

I got an armourers wrench off Amazon a couple of years ago for like £15

It has a few different fittings

fits my GHK perfectly. I think it’s the same fitting (threads will be different to vfc) but should do you to work on your pew. 
good thing with Amazon is, returns are free if it’s not ?