Being on the receiving end of 1 and having to clean up.
After having used this product for 2 years I can safely say that it is the best Grenade in paintball. I have thrown over 100 of these grenades in the last 2 years and the go off every time they can. (I have had 2 not go off, But this was found to be because of the long grass I threw them into. The grass cushioned the impact and it did not go off.) But 2 of over 100 is a pretty good percentage.... If you ever want to see the carnage that these baby's do just ask Blue from EMR to show you the Blues Crew Video. Check out the bombing run from the Michigan Monster Game and you will never look back again.
I would recommend this product to anybody that asks. Not only is the product good But the support is great from the company. After talking to them that is how I found out about the long grass causing the problem with breaking. I changed my throwing style in long grass and haven't had a problem since......