Long-Range Sniper Rifle Safety Act of 2007 - Amends the federal criminal code and the firearms registration provisions of the Internal Revenue Code to classify the .50 BMG caliber sniper rifle as a destructive device. Modifies the definition of "rifle" to include a weapon intended to be fired from a bipod or other support.
Directs the Attorney General to implement regulations for notice and registration of .50 BMG caliber sniper rifles as destructive devices and require the registration of unregistered rifles within seven years after the enactment of this Act.