"Probably an M79. Rounds are HE (High Explosive) for use in relatively open terrain and fleshette rounds (like a big shotgun) for use in jungle."
It's spelled Fletchette. Not that I've ever fired one.
Thank you for your service!
LOL, We're both wrong.
As much as I hate making a mistake, I Googled the way you spelled it (Fletchette) and came up with a couple of results. I looked down and saw the question : "Did you mean Flechette?" There were 197 results for that spelling.