OP, if you want a 5.56 AK, knock yourself out. The ones that are currently available new (Arsenal SLR-106 and Archer) are good rifles, and as long as you use the correct magazines, you shouldn't have any problems with reliability.
You’ll find there is a seemingly large group of people who think “5.56 doesn't belong in an AK”, but I see that as more of an emotional argument that a substantive one. As long as you buy a well-made rifle such as one of the two mentioned above, it will be reliable and as accurate as it needs to be. Accuracy with the Archer in particular is said to be quite good (Arfcom member FAC did a
review of the Archer, and he was getting AR-like accuracy out of it). And yes, there is something to be said for being able to transition into an AK without having to adopt a new caliber. I think if I was an AR guy and I wanted to buy only one AK, I would probably look at a 5.56 AK first simply to avoid having to stock another caliber. I know, I know…”7.62x39 leaves bigger holes” some people say. That’s great and all, but I’m pretty certain the paper targets and soda cans I shoot at won't care.
That said, the SLR101’s are fine rifles too, and if you simply want something different for your current inventory of rifles the SLR101 represents a good buy for a factory-built, milled AK. I have the SLR-101 and the Arsenal SLR-106, and like both of them. I have a preference for 5.45 AK’s myself, but that’s an entirely different topic.