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Posted: 1/31/2016 9:47:48 PM EDT
I need to know what the gas port size is on a Factory 16" barrel. I want to have a factory 20" barrel shortened to 16" and threaded 1/2"X28.

I found a web site that listed it at .089 (the same as the 20").

IIRC, all 4 barrel lengths have different sizes.

Years ago I had a 20" AUG barrel cut to 15" and had the flash suppressor permenently attached, it was a pain to get it run after that
Link Posted: 1/31/2016 10:24:37 PM EDT
[#1]
iirc, the 20" and 16" have the same gas port size.  it's only when you go under 16" that it changes
Link Posted: 2/2/2016 8:07:23 PM EDT
[#2]
Dont cut it. I would be happy to trade you !!! I would just need to remove this factory rail on this thing . i don't have  the folding grip but you could keep yours and I would keep my rail. Just an option.
Link Posted: 2/3/2016 5:04:54 PM EDT
[#3]
scroll down...

http://www.steyr-aug.com/14incbarrel.htm
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