G&p MULTI TASK MTFC fore change upper body for m4 electric gun (m4 vli)

New amazing anodized aluminium upper receiver for m16/m4
hi quality finish with anti scratch processed surface
special shape to install TRANSFORMER front set onto standard m4 rifle

perfectly match the old lower body and standard gearbox of g&p m4 guns
the hop chamber slot it is made for the new detachable hop chamber
fits G&P electric rifle and compatible m4/m16 series