I remember a long time ago, maybe in WWII, the U.S. was experimenting with dropping flechettes.
In Vietnam I’m told we dropped millions of thumb sized hardened steel bomblets out the back of cargo planes.
On the ground it sounded like a rainstorm.
Charlie’s first clue there was a problem was when one went through is rice bowl, the second, his helmet...
I have one in my collection of WWII gear. Solid cast metal, 4 fins, ~3.5" long, max O.D. = 0.65" ...
TXnMA