I imagine it would be damn near impossible to make every spring, detent, and all the other components in house and still be profitable. Especially for a company as green as Loki. What they make is good, but being able to build a solid AR from another company's parts is where the profit is.
Byron, really any LPK is as good as any other. The trigger may be different but the milspec trigger almost always blows compared to an aftermarket trigger like JP or Giessele. If you're going to swap that out anyway, it probably won't matter about the other small stuff in the LPK.