The J19 electroscope functioned as a macroscope that was integrated into the Sonn-Blas Corporation's F-11D blaster rifle, a common weapon for the First Order. This macroscope offered an 8x zoom, low-light vision, and antifogging features for snowtroopers. First Order stormtroopers wielded the F-11D blaster rifle with the customizable J19. Captain Phasma of the First Order also used a modified F-11D blaster that included a J19 electroscope.