Everything can be modded.
The web says 100m range but the rx is probably built in with fcb & esc.
I'd have to open it up to see if you could disable the rx & if could not, add my own but that means a new tx/rx...
Other than that, there isn't any. Maybe snip the light to get about 15 seconds extra flight. Strip any unnecessary parts off. I found this below but it's not really moddable unless you got a proper rc transmitter & micro receiver to extend range.
If you search you could probably find some higher kv motors but they maybe a bit fatter than the present ones which would mean dremel time.
Open it up find the antenna & see if you can get it outside the frame, drill a tiny hole. In open places this can double your range. For £24 I wouldn't bother. Fly it to death & move on. Save up for some proper kit if you enjoy it. It will be worth it.