Android wrote:Does it have to be a JG 416 barrel nut or can you use a VFC one?
To use a VFC barrel nut you will be required to rethread either the barrel nut or the upper receiver as the inner diameter of the threaded section on the VFC is too small. Additionally I did not have the JG and VFC at the same time, so I can't say if the rail JG rail and the VFC barrel nut are compatible.