Well, there's a sketch of a sort of "molotov cocktail mortar" on rifle grenade principles using a sawed-off 16 gauge shotgun on a home-made bipod.
The butt of the shotgun is placed on the ground so as to form a tripod. The shotgun shell contains a long stick that protrudes out the end of the barrel. On the end of the stick is a molotov.
Man, oh, man you couldn't pay me enough to be the sucker that had to fire that! Too much charge and whoooosh!
