[TOMT][tv show episode] murder mystery possibly 2000's or 2010's

I could be misremembering but I think here are the details:

Body shows up of person who dies from gunshot wound to the leg

Turns out it was this person's friend, who confesses in the end out of guilt. The victim told him to shoot him in the leg so he can prove he's tough or so he can be in a gang or something, but he ends up bleeding out and dying.

The shooter buries the gun, I think on a playground but I'm not sure.

I'm pretty sure it's scripted and not true crime

Thanks!!