I agree. Looks like tempered glass.
Tempered glass will crumble like that if it is not laminated. The idea is there are no sharp edges, thus it turns into a pile of marbles, more or less. It's curious why there seems to be more glass outside than inside though.
Yep but when one hunter shoots another one this is a hunting rifle;
Oooooooooooooooooooo, I want one! How much?