kjw m4a1 on the go now, should have it on friday or so!!
in the meanwhile I bought a WE M4 CQBR and I'm totally satisfied too, nice kick, nice look, good accuracy, and can choose between Co2 or propane. I have download the maintenance guide from a member here.
heres a pics of my WE M4 CQBR Co2/Propane version: