The Worker MOD spring is specially design for Swift blaster, this spring built by a 1.7mm wire that enpower your blaster.
Buffer pad for the plunger included to reduce damage when "dry" fire, it is optional but please be careful on use of strong spring.

Worker MOD 1.8mm Wire Spring Coil Upgrade Kit for Swift Blaster Toy

SKU: BW0574
  • Size (LxDia, mm): 350 x 11
    Weight (g): 60
    Color: Silver
    Material: Music Wire
    Fomation: Coil forming
    Packing: PolyBag
    Packing Size (LxWxH, mm): 360 x 20 x 20