compatable receiver for G&G gearbox

[purchase]

I have a G&G M4 blowback gearbox and top receiver.. Would anyone know what bottom receiver would fit the gearbox and top.
Thanks

[guard-sniper87]

Re: compatable receiver for G&G gearbox

any bottom reciever will fit mate,

but only G+G blowback recievers and metal TOP TECH blowback recievers will fit the top

[purchase]

Re: compatable receiver for G&G gearbox

thanks guard-sniper87,
I tried to fit a Dboys receiver and it was to tight..