CHIHAI 480A PLUS LONG MOTOR 48,000rpm @ 11.1v FIT LOTS : BEAST UPGRADE
FIT v2 GEARBOXES plus others
WELL M4 , HK416D v2
M4A1 JM GEN9 (WITH UPGRADED GRIP and RECEIVER )
WAR INTEREST GEARBOX
+ MANY MORE use with 480 grip