and then build it once Obama bans assault weapons, can I still build the gun? Is the lower the only part that would then be illegal to sell/purchase? I kinda want one, but haven't really looked into it too much. I do know I don't have shit for extra money right now and can't afford to build one. If I could just get a lower and stash it under the bed until next year I just may do that based on what you fellas tell me here.