Ultritium concussion shell

Ultritium concussion shells were starship-mounted weapons utilized by the Jem'Hadar.

In 2373, the Jem'Hadar continuously bombarded a crashed Jem'Hadar warship, which had been appropriated by Captain Sisko and his crew, on planet Torga IV in the Gamma Quadrant. As the Jem'Hadar were unwilling to risk the life of the Changeling who was hiding on board the ship, they primarily fired at the area surrounding the ship, as a show of force against Sisko.