I feel like this is a stupid question, but I cannot find this answer anywhere in the RAW.
If I have two cyberarms (whole or partial, doesn't matter), do I need some kind of additional modification to interact with augmented reality?
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Sign up to join this communityTo use Augmented Reality, you need a commlink. "Internet Access" if you want an analogy to today's world.
And you need a way to have your commlink display information to you, although that is already included with every commlink package sold in Shadowrun (1). You can probably buy upgrades in many shapes and forms. There are integrated commlinks and headware that already have commlinks implanted.
But none of this has anything to do with cyber limbs like arms or legs. It's augmented reality, there is nothing to physically touch.
(1) if you are playing a future version or using a future expansion book, just do a quick check for this yourself in the future book, SR has a tendency to complicate the simple things over time or with more books
Rules-As-Written does not allocate for cyberarms to interact with the Matrix aside from providing wireless bonuses that I can find. You would need to purchase a set of AR Gloves to fit over your hands, just like those packing meat would.
As a GM, I would likely wave it away. Motion tracking in the real world already allows for us to interact with objects in AR, so it makes sense you could do it in Sixth World. I wouldn't allow them to retain the other benefits (force-feedback and being able to read object's properties), though.