Echo 1 crane stock.

I cannot figure out how in the world this thing opens. Does anyone have a clue?

i suppose its the same one on the jg hk 416 go check out review maybe they will same something about it

you mean like the butt plate to get into the battery compartment?

I think the butt pad slides down. (I'm not sure though, I haven't seen my friend do it)

arent there plugs that you unscrew? I remember seeing a vid... ill try and find it for ya.

Nope that's the CA version.

the E1 version is different? Well thats weird... cant help ya then

Well I called ASGI they told me to take it off the buffer tube and remove the two caps but then when I put the buffer tube back in there is no space for wiring.

EDIT: Ok well there are two tabs that you pull together to get the butt plate off. I had to use pliars. You also have to pull out the buffer tube and put the battery in that way. It is VERY complicated but I send a thanks out to the wonderful people at ASGI.