.458 SOCOM gas-system length question

[EPD1102]

A friend of mine works for a suppressor company that is developing a suppressor for the .458 SOCOM. The design that they're looking at comes back over the barrel to increase the baffling volume for better sound suppression.
The upper that they have has a standard carbine-length gas system so they were planning to come back 7" over the barrel. My upper has the mid-length gas system and has less than 5" of open barrel in front of the gas block. Just about all of the SOCOM uppers that I've seen are also mid-length.
My question is, what is the most popular gas-system length on the .458 SOCOM AR15 uppers?

 

[fireball168]

Carbine, by far.

 

[lordjackel]

Carbine, by far.

What he said.

When I bought mine last year all the feedback I could find said the mid-length suffered from a finicky gas system and so finding the right bullet/powder combo was trickier than on the carbine system...not sure how true it was but everyone I spoke to said the same.

 

[RGriff69]

I have a middy but it does seem most people have the carbine.