Angry Gun VFC SR25 ECC Super Recoil Buffer Kit
 
For VFC SR25 ECC GBB
Increase the ROF (Rate of Fire) 
Verion : 
High Speed (HS) : Aluminium 6061 ; 
Hard Kick (HK)  : Stainless Steel
Angry Gun : 20190801HS ; 20190801HK