Many factors determine the severity of a wound, including a bullet’s mass, velocity and composition, and where it strikes. The AR-15, like the M4 and M16 rifles issued to American soldiers, shoots lightweight, high-speed bullets that can cause grievous bone and soft tissue wounds, in part by turning sideways, or “yawing,” when they hit a person. Surgeons say the weapons produce the same sort of horrific injuries seen on battlefields.
Civilian owners of military-style weapons can also buy soft-nosed or hollow-point ammunition, often used for hunting, that lacks a full metal jacket and can expand and fragment on impact. Such bullets, which can cause wider wound channels, are proscribed in most military use.

THERE IS NO WEAPON
MORE DANGEROUS
THAN A WOUND

Classified reports from Vietnam were giving the AR-15 high marks and providing a surprise. Reports from the field claimed that when a bullet fired from the AR-15 struck a man, it inflicted devastating injuries.
The causes were apparently twofold. First, the metal jacket of early AR-15 bullets tended to shatter on impact, sending fragmentation slicing through victims. (In the army, this was variously seen as attractive and worrisome. In classified correspondence, some officers were thrilled by the perceived wounding characteristics, which one prominent army doctor described as "explosive effects." Others wondered whether the .223 round might be illegal under international convention.) Second, the bullets often turned sideways inside a victim, a phenomenon known as yaw. In one respect, the effects of yaw somewhat resemble what could be seen on the surface of a lake when a speedboat turned sharply. In this case, the energy delivery manifested itself as a shock wave within a human body, which could create stretching or rupturing injury to tissue not directly in a bullet's path. By turning, the bullet also crushed and cut more tissue as it passed through a victim, creating a larger wound channel.

Fists and rocks and clubs can do a limited amount of harm, but a gun is entirely different. It makes a weak man feel like a hero and a strong man feel as if he is immortal, and it removes the last inhibition a killer might feel. You don't have to be close to a man to put a bullet in him. You don't have to have to see his face.

There is no weapon more dangerous than a wound.

During my many wars with the Mexicans I received eight wounds, as follows: shot in the right leg above the knee, and still carry the bullet; shot through the left forearm; wounded in the right leg below the knee with a saber; wounded on top of the head with the butt of a musket; shot just below the outer corner of the left eye; shot in left side; shot in the back. I have killed many Mexicans; I do not know how many, for frequently I did not count them. Some of them were not worth counting.

A little bullet pays off so much in wound ballistics. That is what people who choose these weapons know.

The ease with which birds and beasts, men, women and children, can now be shot into sudden oblivion is breathtaking. If the murderer had nothing but his hands, he could kill only a few on a single outing, if lucky. But a victim might fight back, and win. What a limitation, a frustration, for the poor murderer. But with a Kalashnikov – joy! – all such frustration vanishes. In a few seconds dozens of human beings can be left twitching and bleeding on the ground, their possibilities, hopes, loves and endeavours abruptly and arbitrarily obliterated, their families drowned in shock and grief. How satisfying for the murderous of mind; how fulfilling; and all thanks to those who make and sell guns.

Yes, sir. My battalion is famous for self-inflicted wounds and just to make sure I cracked my skull with a rifle butt as well and ran a bayonet into my groin.

Certain guns have a reputation of being especially deadly. They would be the weapons of choice. Contrary to popular belief that these are guys who go berserk, they tend to be well-planned executions. They plan what they are going to wear and what weapons to bring.

There are few weapons more dangerous than our wounds, and, being wounded, there are things we all do that we would often rather die than face.

I don't have a gun, but if I did, I would shoot a baby deer in the mouth and feel nothing.

The AR-15 is, essentially, a gun that was designed to inflict maximum casualties, death, and injury, in close to medium range. That's what it does. The real problem is that we allow that kind of firepower to come into a theater or into a first-grade class. The names you see now are 'modern sporting rifle,' 'tactical rifle.' Those are all just euphemisms for 'assault weapon.' They're being very rational as marketers and as businesses—and as industries. They're only doing what cellphone companies do to make cellphones look different and be more attractive. The difference is what they're selling is lethality.

Americans who know nothing else about firearms are all too familiar with the name AR-15. It’s the semi-automatic weapon that murderers have used in many of the most notorious and highest-casualty gun killings of recent years: Aurora, Colorado. Newtown, Connecticut. Orlando, Florida. San Bernardino, California. Now, with modified versions, in Las Vegas, Nevada, and Sutherland Springs, Texas.