The laws surrounding sawed-off shotguns are clear: shorten the barrel of a shotgun (or rifle) “by sawing, cutting or any other alteration,” to be less than 457 millimetres (18 inches), and you have committed a crime punishable by anything up to five years in a federal prison. (If you’re caught with it loaded, or near “readily accessible” ammunition, the sentence could stretch to ten years, with a mandatory minimum of three years.) So you sawed off your shotgun, posted the fact her on CGN so that every cop who is a member here knows you have committed a serious criminal offence. This site is continuously scrutinised on a daily bases by many Police organisations looking for exactly this type of information. For your sake I hope your IP address is traced back to a mental institution which would explain your post.