Ok after some work... feels like a 2-stage - HIPERFIRE Enhanced Duty Trigger 3 AR Fire-Control Group w/Duplex Trigger, 4.5/5.5lb Pull Weight

I wasn't happy with it at all out of the box. Heavy, gritty, and got terrible accuracy. After polishing the engagement surfaces and lightening the spring a bit, it's a pretty good duty trigger, especially if you shoot ammo with hard primers. Feels like a 2-stage. I'm not a huge fan of the dual-purpose trigger, but could get used to it after a while. So if you're willing to dial it in, it's a good choice for the right applications.