My wife and I just got our first shotgun, a Remington 870 Express. She was looking for one with as short a barrel as she could find, but in the end she got the 26" barrel. This is going to be our home defense shotgun and everyone I work with keeps saying to go shorter, telling I should cut it. They sent me links and videos etc etc., but I really don't feel comfortable doing that myself. After looking online though, I can't find an 18.5" barrel for 870 express model. I would like to keep this longer barrel so we can use it for hunting, etc. but right now I've got to look for what's better there. So my questions are: 1) would the barrels for the other rem 870 (i/e tactical, wingmaster, etc.) be interchangeable with mine? or 2) should I just buy another barrel and take one to a gunsmith?