So I have an 870 for years that sees no range time since I have better shotguns. My thought was to but a shorter barrel on it and go the SBS route. I can not for the life of me find any shorter barrels online. Can I not just buy one, do I have to cut the one I already have? I read another post about buying the new Tac-14 and just adding the Magpul stock, that might work too but I would rather the old fashion wood version I already have.