ok, so, believe it or not, this really isn't for the tavern or the minefield... thinking about my newest acquisition (my remington 870). i like the barrel i have for shooting trap and stuff, but i'm thinking (since i can't really afford several more shotguns just yet for my various purposes) that i'd like to buy a barrel off ebay or someplace, that is either a short barrel already created with home defense in mind OR buy a barrel off ebay etc. and literally saw it off. has anyone out there done either of those things? if sawing, do you literally just get a hacksaw and go to town? concerns? thoughts? i've read the barrel needs to be at least 18 inches long to comply with federal law, and different states and municipalities may have additional restrictions, but given that, what would you all do about getting an inexpensive barrel to swap out for HD, either "pre-shortened" or DYI?