Features:
- Compatible with the M135 AEG airsoft Rifle.
- Calibration tested on 6.03 - 300mm barrels with zero hop-up on 0.20g BBs.
- Improved coiling reduces stress on mechanical and electrical parts.
- Pre-compression reduces loss of power from initial shrinkage.
- Black zink plating for corrosion protection.
- Closed grinding ends prevent reduction in ROF from constant bending.
- Full specification control to maintain performance.

Specifications:
Construction: Steel
Compatibility: M135
Springrate: 0.943N/mm

Package Includes: 1X Spring

Color:BLACK

Package weight: 5 lb