ARES E.F.C.S. Metal Complete Rear Gearbox Set For Ares (Ameoba) M4 AEG Airsoft (One-Piece Cylinder) Inner-Barrel-Length-(mm)_140mm and the trigger is also

and the trigger is also easy to be pulled off

Stubby Buttstock (Black) (COP014B)

Silverback Gear Set 18:1 For MDRX AEG Airsoft Rifle

military in the 1980s as an improved version of the M16 rifle

ARES E.F.C.S. Metal Complete Rear Gearbox Set For Ares (Ameoba) M4 AEG Airsoft (One-Piece Cylinder) Inner-Barrel-Length-(mm)_140mm and the trigger is alsoKey Feature Electronic Firing Control System (E. F. C. S) Rear Wire Complete Gear Box Set Upgraded Version Reinforced Metal Gear Box Housing Reinforced full teeth piston, gearbox shell, and an upgraded EFCS which is ARES's MOSFET system allow to shoot in either, Semi Burst, Burst Full Auto, or Semi Semi as well. Version 2 gearbox, will fit in MOST brand M4 AEG as all gearboxes are relatively the same shape and size Some G&P and VFC bodies change