Naaaaah, it's simple really... you can buy the kits to replace the contact bars in the stock which already have a mini Tamiya connection... Using that method you don't need to touch the NGRS.
I do plan on getting another MWS though... I fancy turning it into a L119A2 . It's just got to be done right?
That's actually true...I have a NGRS which has a prommy 6.03 / purple hop/ and a spring guide... On a stock Marui piston it's pumping out 330fps!!! Go figure that one folks... But me be me, I'm ripping out the guts anyway and going all prommy inside.... I just like tinkering