Seeing as I have never played any of the Cyberpunk pnp rpg's, or have not spent much time in reading up about the game really... I don't know of any particular weapon from the game that I would like.
The closest thing I could say is to give the type of weapon that I would most likelly end up prefering. And that would be something in the rifle range... be it bolt action, single shot, semi- to fully automatic assault types.
To narrow it down though... I would probably go with some kind of long ranged, semi to fullauto, types of rifles, with the ability to use scopes, and possibly suppressed as well. Because I like the tactical option of dealing with a combat situation as I wish... or need to, if it is forced on me due to circumstanses.
I do tend to lean pretty strongly towards the "sniping" type of thing... with taking down each enemy with one well aimed shot (no matter the weapon). Actually, if it had not been for the fact that I have pretty bad eyesight (especialy on my right eye... which get's even worse due to the fact that I am very strongly so right handed... shooting left handed, and aiming with my left eye, feels extreamly awkward for me), then I might have tried to go down the route of a sniper when I did my military service back in the late 90's (I ended up in the artillery instead, thanks to my intelligence, general IQ, and math skill... so another type of "sniping" all together... sort of... XD).
And in most videogames I tend to follow this, with only firing one single, well aimed, shot... again sniping... and again with any weapon I use (even things like submachine guns which are not usually that good at long range and accuracy at those ranges). Which should point me towards bolt action rifles... due to the increased accuracy of such rifles compared to semi/fully automatic rifles... but... as mentioned I like the flexability, and ability, to deal with any combat situation... so I end up with semi- to full- automatic rifles, with scopes if possible, and suppressors as well if possible.
So I would expect that this would also be the case for me with this game... be it the pnp rpg version, or the CP2077 videogame version. I don't know compleatly how it would be in pnp rpg's though, where I would end up... mostly since I have actually never really goten to play a lot of sci-fi pnp rpg's (and never played CP2020), due to that most of my pnp rpg friends prefered to play fantasy games... so that was what we played most of the time (I do really like Fantasy games to though, so I was not complaining about that... XD ). But I am guessing I would still end up around the long ranged, semi- to full- automatic (sniper'ish) rifles, with the potentual for scopes and suppressors.