Here is what happened to Mossberg 500 Forend of one of the shooters:

Broken Mossberg 500 Forend

Broken Mossberg 500 Forend

Broken Mossberg 500 Forend

Broken Mossberg 500 Forend

Broken Mossberg 500 Forend

Broken Mossberg 500 Forend

That is why I love my Remington 870 more! :)