The RoTJ version, if that's what it is, is wrong. The hammers suggest RoTJ, even that squared U-track does. The U-track should be curved, though. The door catch looks nothing like it should. The scope rail should be solid but this version looks more like an ANH scope rail. The front sight is wrong, too. The forward D-ring holder is a nice touch even though it's radically inaccurate.
The forward D-ring (only the ring itself, not its holder) and the hammers are the only proper details of this blaster.
This E-11 is the unwanted child of an ANH and RoTJ E-11. It's ugly and wrong. The merging of different E-11 styles doesn't create a catchall E-11 that covers the original trilogy. Instead, it results in a monstrosity that doesn't make any sense.
If someone tried to pass this off for a RoTJ E-11 in an EIB request I'd shoot it down. It's bad.