Isomagnetic disintegrator

From Memory Alpha, the free Star Trek reference.

The isomagnetic disintegrator is a shoulder-mounted weapon similar to an ancient Human bazooka. In 2375, Captain Jean-Luc Picard took ten isomagnetic disintegrators on his mission to help the Ba'ku resist forced resettlement. Lieutenant Commander Worf used one of the disintegrators to great effect against a pursuing landing team sent by the Son'a. (Star Trek: Insurrection)

There has been some debate over whether the weapon Worf used was the isomagnetic disintegrator or a tetryon pulse launcher.