Gas port sizes...6920 vs. 6921

[Jimbo45]

I have a 6920 barrel I am considering chopping to 14.5" and pinning a hider on. Do the 16" 6920 barrels and the 14.5" 6921 barrels share the same gas port size? I want to make sure that once its at 14.5", it has the correct size port as designed. I suspect that they are the same, but does anyone have the measurements? TIA

[RyanB]

Both .062-.063.

[Robb Jensen]

From the few dozen I've measured .0625"

[Jimbo45]

Both .062-.063.

Excellent, thats what I suspected. THanks guys, I will tell the shop to leave the port alone then!