ICS L85 with description and pictures showing the mechbox and some anecdotal information.
ICS ICAR AR series AEG with description and pictures showing breakdown with minor information
anyone else notice the picture of them using the bipod from the ARM to open a bottle of soda/beer?
Hope this helps for information.
As for the difference, they are fundamentally different, if you wish to purchase an AEG with a relatively large upgrade base I would lean more toward the Galil as others have also indicated. It's standardized (to some extent) v3 type internals will require less fitment to function.