Improve the speed and accuracy of your Nerf JupiterXIX-1000 Blaster with this 14KG spring from Worker. The Worker Upgrade 14KG Spring for JupiterXIX-1000 is made out of a durable stainless steel and weighs in at 16 grams.
FEATURES: • Compatible with the Nerf Rival JUPITERXIX-1000 blaster
