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

SPECS:
• Material: Stainless Steel
• Dimensions: 190 × 50 × 30mm (packed size)
• Weight: 16g
• SKU: W0417