It should NEVER be a felony with mandatory prison for simple possession of any common firearm absent any intent to commit crimes. If a state wishes to prohibit possession of a specific firearm, simply charge them with a misdemeanor, confiscate the firearm, and give them a fine. Nobody needs to go to prison over something like that, it's ridiculous... especially when gang members committing armed robberies are bailed out the same day to commit more crimes or flee the state.