WEST POINT, KY - OCTOBER 10:  Scott Davis, left, and Walter Gale, right, both of Chicago, Ill. check out a machine gun that kept jamming as they fired it at the Knob Creek Machine Gun Shooton October 10, 2009 in West Point, Kentucky. The Supreme Court is currently hearing a portion of last year's Second Amendment case, District of Columbia v. Heller, that found that the amendment protects a person's right that the federal government can not abridge. Getty Images logo Getty Images 28 months ago

WEST POINT, KY - OCTOBER 10: Scott Davis, left, and Walter Gale, right, both of Chicago, Ill. check out a machine gun that kept jamming as they fired it at the Knob Creek Machine Gun Shooton October 10, 2009 in West Point, Kentucky. The Supreme Court is currently hearing a portion of last year's Second Amendment case, District of Columbia v. Heller, that found that the amendment protects a person's right that the federal government can not abridge.