Effect

 Not an easy article to read.

 Washington Post: The Blast Effect - This is how bullets from an AR-15 blow the body apart - Editor’s note: We are publishing these 3D animations to show the destructive power of the AR-15. The images may disturb some people. By N. Kirkpatrick, Atthar Mirza and Manuel Canales 

A single bullet lands with a shock wave intense enough to blow apart a skull and demolish vital organs. The impact is even more acute on the compact body of a small child.