The drafting software I tried to get is basically worthless, and as such will be returned (I managed to find a free trial for it while digging for the return info. It was not conveniently placed, I looked for it before purchasing).
As such, a 3D printer isn't particularly useful until I've got reasonable drafting software.
Also, found some more reviews on the AR-15 lower that all pretty much agree that it's great, so that's nice. Just have to pick out an upper that I both like and can afford.