A couple of Built in ranged weapon(Cyber) questions

[EmissaryOfNexus]

1) Would it be reasonable to use a TW weapon as a built in ranged weapon (acquired separately)?
2) If a rifle or other weapon requiring two hands to wield is implanted, does the 2 hands requirement still hold?
(it's just that i'm having a difficult time picturing how would this look like)
3) if a rifle with an integral grenade launcher is implanted (like the NG-LG6) does that mean both options are available?

10x for your help

[Freemage]

1) Would it be reasonable to use a TW weapon as a built in ranged weapon (acquired separately)?

Yes, but...
If the weapon is just something you shoot, that's fine. However, if you use Shooting to activate a built-in Power of some sort (Iceblast Shotgun, Lightning Rod), then Shooting is being treated as an Arcane Skill, and thus is subject to your Strain penalties. Since the Hellfire Rifle, Fireburst Rifle and Lightning Rifle all really just add a Trapping to an existing weapon, they wouldn't be subject to this, I ~think~.

2) If a rifle or other weapon requiring two hands to wield is implanted, does the 2 hands requirement still hold?
(it's just that i'm having a difficult time picturing how would this look like)

Think of it as larger weapons throwing off your balance when being used. So if you're using a 2H weapon, you have to alter your stance and can't effectively also use a hand to do anything else. I might allow you to hold onto something with a free hand, but not to use it. Individual GMs will likely vary, however.

3) if a rifle with an integral grenade launcher is implanted (like the NG-LG6) does that mean both options are available?

Yes. Note, the last I read an OA on the subject, if the ammo would be described as the source of the damage (rather than as an effect of the weapon it was fired from), then when the weapon is converted to TW, it doesn't reload with the recharge. So, FREX, a TW grenade launcher (underslung or otherwise) would not reload when you charge it with PPE--you'd still need to load it with normal grenades. (I know you didn't ask about this, but figured I should mention it in light of #1.)

[Ndreare]

I assume you are thinking of a MARS Techno Warrior or other character. But just in case, I think it is also worth noting you would need an AB to activate the TW devices. Which would make it impossible for a Combat Cyborg as the only Arcane Background they can have is Weird Science and that does not grant access to TW items.