BT-4 Spring Kit

The BT-4 Spring Kit allows adjustments to be wider then the stock velocity adjuster can do. 4 Springs raging from high to low strength can be easily installed in either BT-4 combat markers or Tippmann 98/A5 guns. Pick these up if you are experiencing spring wear or want to customize your marker to shoot exactly what you would like to or shoot father if you want to play the sniper. 

Features:

• 4 Different Spring Strengths colour co-ordinated 
• Get a wider range of velocity adjustments
• Fits in Tippmann A5/98 or BT-4 Combat