I did buy that thing, yes. The only parts i compared was the drop-out changer valve, and its stock barrel (aluminum with brass bore, it was keen beans).
Drop-out changer valve did not fit the Hammer 7 body, and the iiSports Hammer, while being spyder-threaded, it's barrel did not thread completely onto the Hammer 7 breech. I was perplexed.
Can't do any internal comparisons now, though, since i JUST sold the iiSports Hammer.