DD 16" M4 Carbine Barrel Gas port size?

[K9222]

I've searched and came up with three separate sizes. The most common sizes I see are .062 & .063

I did see one guy on here post that the DD 16" barrels specifically were .058. If anyone can help me out it would be much appreciated.

[Quentin]

Just to make sure... you're asking about carbine length gas?

[K9222]

Just to make sure... you're asking about carbine length gas?

Correct, carbine gas system.