Here is an explosives system I made a while ago. It is very customizable and allows you to easily create nearly any type of throwable projectile or explosive in seconds.
I am now giving it away for free but you can pay what you want if you’d like.
https://sellfy.com/p/wA3Q/
https://drive.google.com/file/d/0B-GF-CskJDkRQ0NUaHd1VXJzN00/view?usp=sharing
Cheers