Yep, that's the one. The Mk12's much less popular DMR brother for cloning because they're not that flashy or distinctive, but put a carry handle on it if you want to do irons like a more classic M16. Again the rail is the only weak point because I'm pretty sure it's an early KAC and it's got a big old rail-gaposa up top due to the barrel nut. Some discussion of the parts needed
here.
The gasblock may be the stumbling point both in a financial and acquisition sense though, so I'd look for less KACy alternatives that still have the bayo lug and flip-up FSP like
this, for example. Not perfect, but still has the lug, is a little less discontinued, and isn't super fiddly on installation.