>>6312808True. it would pair very well with Grenadier and be quite handy in close quarters as well. With Scrounger, we wouldn't have to worry too much about ammo either.
That said, it wouldn't be too hard to beef up the UNSC's existing rotary grenade launcher (the XM510) and stick a gigantic tungsten alloy bayonet on it either.
Surely the idea would occur to Sven once sees one in the field (an idea born from an interaction of Wunderkind and Grenadier I would think).