• Suitable: Appropriate for modification of Nerf N-Strike Elite Delta Trooper.
• Advantage: This upgraded spring can provide stronger elastic force, increase the range 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 replace the original ones, bring user better usage experience.
• Material: Made of superior imported piano wire that has longer service life and higher strength.
• How To Do: This product's modification requires more professional disassembly ability, please refer to the picture tutorial for spring replacement. (Suitable for people over 14-year-old.)

Specifications:

Package Content:

.1 x Spring
.1 x O-ring
.1 x Vaseline
.1 x Cylinder Protection Ring
.1 x Rear Release Spring