Jeez: you guys sure are good, being able to measure that barrel off a computer screen. So, I decided to do it too. I came up with a barrel length of 17.25", about 1/2" shorter than original. I used the installed length of handguard as the constant and measured it on my 17" flat screen with my trusty old K&E engineer's scale. I used my Inland as the standard, so all I had to do was measure the real handguard and the exposed barrel including the permanently-attached muzzle device.
To me, the real crime is the starting price. I'm always looking for a shooter because the cartridge is so perfect for home defense, but that's a $350 carbine. And what the heck is that rear sight?