Recoil Spring Upgrade Eagle 6 for Tokyo Marui M4/416 NGRS

This Eagle 6 recoil spring upgrade for Tokyo Marui M4/416 NGRS ensures the recoil system can keep up with an increased ROF. As you increase the ROF, the gears will start spinning faster, but the recoil weight’s return rate will remain the same. With this upgrade, you can decrease the recoil weight’s return rate. 

The Eagle 6 recoil spring upgrade for Tokyo Marui M4/416 NGRS is made of stainless steel which is heat treated for increased wear-resistance. It’s compatible with the following airsoft replicas, among others: 
• Tokyo Marui M4 Sopmod NGRS 
• Tokyo Marui M4 Socom NGRS 
• Tokyo Marui 416 Delta NGRS 
• Tokyo Marui 416 Devgru NGRS 
• Tokyo Marui 416D NGRS