I don't want to change my buffer as the lower is donated from my colt rifle and will still be used for that.
The buffer is a 10 second change out and is temporary. I would look at doing the buffer prior to drilling out a bigger gas hole.
Something to consider I suppose. I don't own a carbine or standard buffer though. Also rsilvers says in the faq here h-buffer for carbine gas and h2-buffer for pistol length gas. So I ask myself what's different?
16" or 14.5" is as short as you can really go with carbine gas, depending on if you want subs to cycle reliably without a silencer. The gas tube is .116" ID.
So a longer barrel would keep pressure on the gas port longer. So far only supersonic rounds. Seems these should definitely cycle. Thanks for the gas tube spec. Tells me I should be able to open the gas port all the way to .116 before further opening begins to lose effectiveness as far as increasing gas to operate bolt.
Is it just me, or is this little bit of info (gas port size) some kind of secret. I can see manufacturers have done the research and developement and therefore paid the price to acquire this info. Hope I'm not being rude by asking industry professionals for help with non-name brand build. Thanks for the responses thus far.