While Jack's burned body as a soldier may be the most graphic injury, the film also depicts point blank shootings, explosions, beatings, stabbings and wild car chases. (parentpreviews.com)
For example, a dramatization or illustration of a car accident occurring in which graphic injuries are displayed is not permissible. (lawyerist.com)
Stronger is rated R by the MPAA for language throughout, some graphic injury images, and brief sexuality / nudity. (parentpreviews.com)