Okay, I got my scar barrel back from Marvin a few weeks ago cut down to 10" (factory CQC length correct?) Now this question is not based on anything but a few pictures I've seen, not solid evidence. Now I'm happy with it but it still looks like it's a half inch to long. Reason I say this is there's still a half inch of barrel behind my flash hider, where as the mk16 barrels I've seen the flash hider is basically right up against the gas block maybe 1/8" of shoulder. So is the real mk16 really 10" or more like 9.5"? Anyone know?