14". I bought a Mossberg Shockwave. As usual, those who never owned one or shot one, will put it down. but there are many videos online that show you can hit what you are aiming at out to 15 yards, shooting both from the hip or aiming it like a handgun. It is perfect for home defense where a long barrel is a negative, not an asset. Try entering or exiting rooms in a simulated training exercise to see what I mean.
I learned very quickly during training that you cannot lead with your barrel when exiting/entering a room or turning corners. I also learned that if you turn rapidly in a hallway, your barrel can slam against a wall. For those reasons I never used a shotgun for home defense until now.