We all know they're out there, but it's sometimes hard to see an operator carrying one -- especially in a field environment.
But I ran across a pic from USASOC of some 10 SFG bubbas doing some training out at Fort Carson. The dude closest to the frame is carrying an unusually short M4 variant. My guess is an H&K 416 with a 10" barrel, but I'll defer to the experts on this blog to set me straight.
Now, for certain missions, the super short carbine is the way to go, but for field work, you'd think even snake eaters would go with a barrel length that can reach out and touch someone.
So tell us folks, what's the deal with this gun?