A picture should help clarify things.
I just added this to the store.
http://www.blackrivertactical.com/store.html#!/~/product/id=18000703
What is shown is a cutaway view of the gas block, barrel and gas tube.
The port is not shown in the picture, but it screws into the larger section between the barrel and gas tube.
That is ingenious 
I’ll be contacting you guys for a variety of these little guys
If they were available, I’d be all over it.
I might see if The RifleSmith can tap my fixed FSB and fab me one of those.
Esentially copying Clint’s idea… it’d seem that a 316 SS socket set screw tapped into the gas entry way of the FSB and then center-reamed to .072 or some such would work?
It oughtta. I’ve been successful with a similar approach.
Maybe make 3-4 screws with say .055, .062, .078 or so and put your fsb back on with one taper pin lightly tapped in— try the sizes for function until your’e there, then lock 'er down. I would not bother to LocTite the set screw in-- it’s not going anywhere. Might be nice to maybe be able to get it out some day.
I like this idea. Wish I would have thought of it when I had a slightly over-gassed 13.7"
A much more direct approach to mitigating gas issues than using things like heavier buffers. Very neat
Exactly!
Gas drive is the final thing that should be adjusted after buffer weight and spring force are set.
I’ll turn these on for ordering.
I’m thinking a three size kit with tap would be the way to go.
The consensus size plus a size larger and smaller to cover variations.
Specific sizes will take a few days to get made up.
Yeah, no need for loctite.
The screw is captured by the barrel and gas tube.
Agreed… DEFINITELY NO LOCTITE.
Cool… I like the challenge of this project. Order Placed and Payment Sent… Thanks, Clint.
Clint, may I suggest including a SS or two with no hole.
What would that be used for Ned?
My first thought too…
Custom ream??
Single shot subsonic :haha:
Yep.
My subs are over-gassing my gun. 
Alright Mark,
got your kit together and will ship out Monday.
Very cool. I can’t wait.
“The Undrilled”… not a new movie…
Just a couple screws so that if the three drilled ones provided aren’t right, the guy can drill them himself.
If that were the intention, a very small pilot hole would be far prefered to no hole at all. Might as well put a small hole in for the pilot while it’s jigged up to do so… I’ve seen people run drills when they have not quite mastered fork and knife, best to give them a starter I would think.