[familyop]

"It was probably not a grenade but an artillery round, anti-aircraft."

Thanks.

If it had been an old 40mm grenade, it's likely that only the primer would have gotten him (bad enough, for sure). The grenades have to twist (e.g., after firing through the short, rifled tube) in order to arm. I was an M203 grenadier for a few years, and that's why it caught my attention.

[RightWhale]

Yeah, that would have been bad in the room. Just a finger cut off and some pieces of the shell to pick out of his skin and he was lucky. More of a pop than a bang.