Thermal Grenades.

Thermal Grenades Concept art model based on the concept art by Ben Mauro for Elysium movie. (Credits to the author):
https://benmaurodesign.com/ELYSIUM-CHAPPIE

What you see below is my interpretation of the concept image. I began with Moi3d for the foundational model. Once the primary mechanical shapes were modeled, I exported the model to Modo to add the final details, materials, textures, and lighting.