MacBook Pro (Retina, 15-inch, Mid 2015): SSD replacement I would like to replace my 256GB storage with a drive having more space, and not less efficient in terms of read/write speed. I was thinking about something like Samsung Pro drives with M.2 interface. But I am not sure if MacBook uses standard interface for this purpose. 

So my question is, which drives/memory chips are compatible with my laptop model? Which hardware interface should I look for?

Also I guess that I need some specific toolkit to replace SSD, right? At least, to open laptop's back lid.
Ok, thanks to @nekomatic and @GioValerio. I guess that one of JetDrive 820 drives should be sufficient for my purposes.