Ummmm
Ok, first off...If you read the "road map" It says that they plan on having C4, and Claymores that can be set. The C4 is manualy detonated...the claymores have a trip wire and blow in a 60 degree angle.
Now, onto the throwing grenade on ground and shooting it...someone's been watching too much TV. Its a common misconception that all explosive explode when shot or lit on fire. Movies they always shoot the plastic explosives. In the real world...you could should plastic explosives all you want...nothin...it requires a detonator to ignite it. Same principal as a grenade. The reason it explodes is: Fuse gets lit when outer ring blows off the top, ignites "very small" amount of gunpowder inside...there is no where for the gas to go from the explosion thanks to the airtight frame of the grenade...so it rips the grenade apart sending fragmentation everywhere. So shooting it would make the grenade complete inaffectual...since you just made a hole for the gas to escape.
Now before I get nailed for this saying it was just a joke....I understand that you personaly were making a joke...but unfortunately too many people in my past have said this for me not too at least shed some light on the issue.
Sgt. Knutson
Eugene Police Department