Rocket dart launchers affixed to kneepads functioned as a kind of rocket dart launcher, designed to be worn on the knee and launched from that position. These armaments were integrated within the armor donned by both Jango Fett and his offspring, Boba Fett.
The kneepad-mounted rocket dart launcher made its debut in the 1980 cinematic release, Star Wars: Episode V The Empire Strikes Back. Its identification occurred later, within the 2018 reference publication titled Star Wars: The Complete Visual Dictionary, New Edition. During a conversation published on StarWars.com in 2002, the actor Jeremy Bulloch reminisced about his time portraying Boba Fett in the original trilogy, mentioning that the knee protectors were secured to his armored attire utilizing velcro type closures.