SCAR CQC barrel length?

[Eurodriver]

He does good work but this has nothing to do with my question and or thread. Im asking industry experts about the real measured length of the MK16 cqc barrel (and some one told me that part). So that way guys who want a tru to spec copy can get it. As i said, 10" barrel leaves a noticable gap between the flash hider and gas block. The mk16 does not have this, so i guess the barrels will have to be cut to 9.5" to get the mk16 overall length? How would smiths cut the 16s barrel to match the mk16 barrel? Im asking SCAR experts for help not bashing or asking others to defend marvins work. He did a great job, it just doesnt look like a mk16 barrel........

Are you using the AAC 51t Blackout? It would help if we could see what you are talking about.