Black Hole Grenade

The 'black hole grenade was a weapon utilized by the Dark Elves during the 2013 Convergence.

Thor: The Dark World
The black hole grenades were used multiple times in the Dark Elves' assault on Asgard, and was used to kill many guardian Asgardians when energy weapons would not break through their handheld shields.

The weapon type was used again in the infiltration of Svartalfheim, where Loki planted one on Kurse that was likely held by Kurse prior to that event, killing him in the process.