I bought this grenade package a while back for the full price of €27.87 and quite frankly I might as-well have burned that €27.87. When I brought my thunder-b out to my local airsoft site the day after I received it in the post I was preparing to leave the safe zone. I dropped the fully loaded thunder-b onto the table in front of me from a height of about 20cm (8inches) when I went to pick it up the shell exploded in my hand and frightened everyone inside the safe zone. The pin had some how penatrated the CO2 cartridge loaded inside. I was advised by one of the Marshals that that can some times happen to aging models after about 50 or so uses...this was brand new,me being so embarrassed to say that to anyone.
Later on back at home I tried to fire it again out the back garden. This time I tried pulling the pin but all that happened was a small sizzling noise along with the shell expanding slightly,so much for the 130 decibels.
WARNING: Do NOT buy this grenade it is a WASTE of your money go down to your local airsoft store and pay full retail prise,I'm telling you its worth it. I have never had a problem with Airsoft club before and I hope this will be the last,but still don't make the same mistake I did,DO NOT BUY THIS GRENADE!