SPRING SOFT, Ultimate, MS05, Red, M135

• Upgrade springs made from military specification steel (0.826 N/mm).
• Minimal power loss and concentration.
• Color-coded for quick selection of the appropriate spring.
• Designed for optimal performance and durability.
• Closed and ground ends for stable positioning during use.
• Available springs: M95, M105, M115, M125, M135.
• Calibration test in a 6.03 – 300mm barrel with zeroed HopUp and 0.20g BBs.
• Progressive winding that facilitates pressure on mechanical and electrical parts.
• Black zinc coating for corrosion protection without affecting performance.
• Color coding for easy selection of the correct spring.