: I remember H&K once developed an assault rifle that used ammuntion without
: shells. As far as I remember it could actually shoot under water because
: it DIDN'T throw out any shells - just like the SMG. This type of
: ammunition is refered to as flechettes - metal darts with an exlosive load
: glued to the end of it. In that case it wouldn't need a shell opening.
: The rifle didn't make it into any army's arsenal.
: What I don't remember right now is, if you can see thrown out shells when
: using the SMG in Marathon.
The caseless weapon was the G11, which didn't fire flechettes and can't fire underwater. You're confusing it with the P11, a battery-fired five-barreled pistol, also made by H&K, that's built specifically for underwater use: it doesn't do much good above water because the long thin round tends to tumble in air and is easily deflected.
No military, so far as I know, has ever used explosive-tip flechette rounds; first, it violates international law and second, it defeats the whole point of using flechettes in the first place.
And the KKV-7 uses cased ammo.
