JGCWorker 5KG Modification Upgraded Spring Kit for Nerf Zombie Strike SlingFire Blaster M6 Shoulder stock Doodle board--Designed with a one-click

Doodle board--Designed with a one-click delete button for kids to draw graffiti

Advance modding technique require for short darts modding

not need to worry about scratching hands or product's surface

Please note: Because the melting point of 3D printed PLA material is very low

JGCWorker 5KG Modification Upgraded Spring Kit for Nerf Zombie Strike SlingFire Blaster M6 Shoulder stock Doodle board--Designed with a one-clickSuitable: 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