There are guns designed for sport. there are guns designed for self defense. And then there are guns designed for the military and law enforcement. Those guns fire multiple rounds per second and can continue to fire so long as a high capacity magazine is attached. Those guns are weapons of mass destruction. Those are the weapons responsible for the modern phenomena of the "mass shooting". Those are the weapons a well regulated militia should be responsible for.

WMDs are not guns. They have specific qualities and definitions. You can keep trying to say that guns are WMDs, but definitions disagree.
Get a grip...you're looking stupid using an inaccurate term.
26 victims in less than five minutes. Was that mass destruction?
You can thank me for clearing up your confusion, later:
The U.S. military refers to WMD as:
Chemical, biological, radiological, or nuclear weapons capable of a high order of destruction or causing mass casualties and exclude the means of transporting or propelling the weapon where such means is a separable and divisible part from the weapon. Also called WMD.
For the general purposes of national defense,[23] US Code[24] defines a weapon of mass destruction as:
any weapon or device that is intended, or has the capability, to cause death or serious bodily injury to a significant number of people through the release, dissemination, or impact of:
toxic or poisonous chemicals or their precursors
a disease organism
radiation or radioactivity[25]
For the purposes of the prevention of weapons proliferation,[26] US Code defines weapons of mass destruction as "chemical, biological, and nuclear weapons, and chemical, biological, and nuclear materials used in the manufacture of such weapons."[27]
For the purposes of US Criminal law concerning terrorism,[28] weapons of mass destruction are defined as:
any destructive device defined as any explosive, incendiary, or poison gas bomb, grenade, rocket having a propellant charge of more than four ounces, missile having an explosive or incendiary charge of more than one-quarter ounce, mine, or device similar to any of the devices described in the preceding clauses[29]
any weapon that is designed or intended to cause death or serious bodily injury through the release, dissemination, or impact of toxic or poisonous chemicals, or their precursors
any weapon involving a biological agent, toxin, or vector
any weapon that is designed to release radiation or radioactivity at a level dangerous to human life[30]
The Federal Bureau of Investigation's definition is similar to that presented above from the terrorism statute:[31]
any explosive or incendiary device, as defined in Title 18 USC, Section 921: bomb, grenade, rocket, missile, mine, or other device with a charge of more than four ounces
any weapon designed or intended to cause death or serious bodily injury through the release, dissemination, or impact of toxic or poisonous chemicals or their precursors
any weapon involving a disease organism
any weapon designed to release radiation or radioactivity at a level dangerous to human life
any device or weapon designed or intended to cause death or serious bodily injury by causing a malfunction of or destruction of an aircraft or other vehicle that carries humans or of an aircraft or other vehicle whose malfunction or destruction may cause said aircraft or other vehicle to cause death or serious bodily injury to humans who may be within range of the vector in its course of travel or the travel of its debris.
Weapon of mass destruction - Wikipedia, the free encyclopedia