It looks as though the chest MIGHT open to insert different bits. But the limbs, nope. They just get stuff plugged onto them.

The chest has a hinge in it. Looks like inserting a key will allow the hinge to fly forward, and a piece of whatever zord-thing you're combining will simply snap in to where a peg will be behind that flip-down part of the chest.

I hope this is half as good as the goseiger megaforce zord. I mean if it's just lacking paint I can add my own, but if it's a piece of crap like overdrive then there's no salvaging it.

Haha, one of the pictures even says, "Chest opens!"

But can you find the keys separate? I don't want to have a bunvh of Ranger toys lying around, just want the main 6, zords and keys.

One of the pictures says:

"Insert Key", showing you a picture of where to insert it on the Megazord.

And then:

"Chest Opens", showing the chest fold down on the Megazord.

Finishing with:

"Store Key", showing an open key being placed in the chest compartment.

But if you only had one key... How would...

Meh, at least that still opens.

Although I guess this means there's no cannon inside?

I have a feeling that we're gonna have a lot of doubles of keys. Gokai red comes with both the morpher and the megazord.

I just realized, wheres Furaimaru? Or is he possibly gonna be later Silvers Megazord?

He came a good bit later in the show, I'd assume they wouldn't blow their wad and show all the toys at once.