This is an honest question from someone who wants one purely because it looks incredible. The 10.3-inch barrel is very short, I know it's practical for CQB and vehicle work, but for a civilian who mostly shoots at a range and occasionally uses it for HD, is there a real functional argument for the MK18 ? I just want to understand what I'm actually trading when I go from a 16-inch to 10.3 and whether any of that matters for how I'd actually use it.