Good looking Rattler builds, I'd been looking at picking up a short SMG for indoor games early next year and hadn't realised anyone made an AEG version of the Rattler.
How difficult was it to remove the gas block? I don't mind battery boxes but the wires snaking out just looks like a snag hazard waiting to happen resulting in breaking out the soldering iron. Guessing the 11.1 you are running yours on is a stick type battery you would see used with models like the G&G ARP series?
Being on the cheaper end of the spectrum I know things like working bolt catches aren't the norm (Specna still don't seem to do that and their more expensive models are in the mid tier cost bracket) but do parts like the QD points work as you would expect?