Talking about GBB? It's Kwa. For AEG, there really is not a good one out there. Maybe a tokyo marui, but they are going to be hard to find ... VFC is going to come out with an AEG mp7 sometime, or so they say, all we can do is wait and see...
What would you recommend if he wants to have something light but still be able to shoot from afar? He doesn't want to be a sniper, but more like a long range assault person
They make some pretty realistic replica stuff which is nice for if you don't want to own a real firearm or can't get a certain style or antique like you said
I agree with Alec. There is a niche for everyone in airsoft and maybe it is just a matter of finding a style of play that fits you. You don't need a bunch of fancy gear and to be super active. There is always sniping and marksman roles for more patient and farther back engagements.