The W-90 concussion rifle, alternatively known as the LJ-90, was a concussion rifle with an extended barrel. It was produced by BlasTech in the era surrounding the Rebellion.
It utilized a targeting scope mount identical to that of the E-11 blaster rifle; however, its accuracy was inferior, despite possessing a significantly greater effective range. 4-LOM employed this specific concussion rifle model after forming an alliance with Zuckuss, who also occasionally wielded the same blaster rifle type. Firing this weapon generated a shockwave, and it was characterized by its substantial weight and challenging handling.
This rifle represents a slight alteration of the MG34 machine gun from World War II. The DLT-19 heavy blaster rifle was developed using the very same weapon as its foundation. Dengar, the bounty hunter, is depicted holding this rifle in a number of preliminary photographs, although not in the final film.