Super Shooter - Upgrade Spring M140 (430-450fps) - TH1027

Features:

Upgrade your AEG's fps to 430~450fps. 

Advantage: strong strength and good screw pitch, tens of thousands of times without shortening nor deformation.

******It is highly recommended to seek for professional assistance before purchasing / installing this product ******

Specification:

• Material: Piano wire
• Gross weight: 20g
  
• Color: Black
  
• Qty: 1pc M140