another slickguns user, i would bet. (saw these today too).
i researched these once and found that they were - at the time - legitimate turkish clones (if i recall).
however, i have heard that the .223/5.56 roller lock guns are somewhat finicky and didn't think i wanted to take a chance on a non-german made hk clone at $1200+.
also, you'll need to buy the specific mags.
in the end i was thinking: what does this rifle do that a high-end AR won't?
just some thoughts...