Whatever you do it will still be a G&G Raider tbh
on that sorta gun - you just use it
or
sell it and buy a different model
if the RIS is two tone then you could/might strip/paint it AFTER you get UKARA'd
but really use it for what it is, it is a light starter gun and there is nowt really wrong with it
why bother trying to stick a £40 metal RIS on a £100 value gun
it won't do fuck all really - you can stick shit on the std Raider RIS OK
RIS stuff - especially cheap stuff can be iffy on any gun
sometimes the threads are really tight, stuff doesn't align correctly
or there is a ridge between top of receiver & RIS system that just looks odd
Not all RIS upgrades go according to plan
& personally I'd refrain from going too nutz on a two tone starter - even a Raider
save ya money for a different model is best advice