Things of note:
The paintwork isn't bad for mass-produced toy but they went a bit overboard with the silver and it looks a bit naff in places. It could do with a matt/flat spray to make it a touch less shiny. I'm going to try to remove the silver and add my own on as well with either some rub n' buff or dry brushing.
Switches are metal which is good. The intensify button is larger than a normal momentary switch but it's very comfortable to use. It's a shame the switch on the end of the barrel is just decoration. It's fine to be non-functional but they didn't even bother to even paint it to look like a real switch. Should be possible to put a real switch in here but it would require disassembling the front barrel which might be a ballache.
Knobs are metal. Cool to the touch and won't scuff like painted plastic.
Bargraph is just 5 LEDs behind but it looks alright. I don't think anyone is going to look too closely at that part.
The "tape" on the back is a sort of rubber grip. It looks like the only way to remove it would be to cut it off. I presume underneath is a plain black grip but don't take my word for it, they may have cut corners and there's emptiness for all I know.
The shotgun grip is moulded into the front barrel and is non-removable. Hopefully, someone will come up with a moulded grip that can sit over it for a more classic GB1/2 look. Alternatively, you could paint it black or add your own leather wrap grip or something... go wild with customisation.
The "Clippard" has a nice metal top which adds to realism but sadly the same care wasn't put into the rest of it. The sticker looks a bit naff and the base is far too shiny. The good news is that its just screwed on to super easy to remove and replace with a real one or a resin replica.