I don't think the stock will have any problems with loads on it. It doesn't have a tight fit with the rods but it lease it doesn't bind when I extend the stock. Something that the TGS version have been known to do.
The EBR without bipod and battery comes in at 13 lbs right now. Seems like all of the weight is resting on my left arm.
Changing the special battery for it would require one to disassemble the top section and do the quick takedown of the receiver from the bottom stock. Not too practical in the field which is why I went for the AN/PEQ-2 setup.
