Laylax Non-Linear M120 Irregular Pitch Airsoft Spring

Features:

• Irregular pitch spring coils: Variable tension. Reduces stress, wear and tear for your gearbox
• Strength: Made out of stainless steel. Increased tension and durability. Tension lasts 50% longer than other leading brands.
• Compatibility: Designed for all versions of Airsoft AEG gearboxes