**Build to order**
Item may take approximately 10 ~ 15 business days to prepare and ship.
Extended Length & Strength spring for Daytona gun Airsoft system.
Increases ROF by increasing cycle speed.
All kits with reinforced airshaft will handle heavy recoil spring without problems.
*Requiring Higher PSI to Operate heavy recoil spring.
*Slightly lowers the feeling of recoil.
*Profesional tuning required, use at own risk.
---Trimming down the length of spring to achieve desired ROF---
DO NOT install the entire spring in without trimming. It will cause malfunctioning and damage the system.