JGCWorker 5KG Modification Upgraded Spring Kit for Nerf Zombie Strike SlingFire Blaster Push Rod Set please select the correct combination

please select the correct combination in order to equip a full rail

This product length is stretchable

Package Weight: 240g

Blaster NOT included

JGCWorker 5KG Modification Upgraded Spring Kit for Nerf Zombie Strike SlingFire Blaster Push Rod Set please select the correct combinationSuitable: Appropriate for modification and replacement of Nerf Zombie Strike SlingFire Blaster. Advantage: This upgraded spring can provide stronger elastic force, promote gun's firing distance after replacement, increase the range to 1. 5 times or 2 times on the original foundation, brings user better usage experience. Note: As the spring's elasticity is too strong, this accessory set provides special matched cylinder protection ring, O ring to