It comes from Red Jacket, the gun drama people.
I’ve always liked the theory of a bullpup, but practical execution of most of the aftermarket designs I’ve seen always seemed claustrophobic hack jobs, with some controls ending up being awkwardly-placed and hard to access. I like the safety placement and shape on the triggerguard. Until I get a better angle on the mag release I’ll reserve judgement on that feature, but if it is executed as well as the safety this has the potential to be an example of an aftermarket bullpup done right.
Did I mention it was printed using a 3D printer?