Pete, all props for calling attention to these, but that jig and procedures [from your post the other day] are stone age compared to 5D Tactical. Personal experience (actual builds) and research has shown me that they not only have the best jigs and tooling, but by far and away the clearest, simplest and best written/videographed instructions and procedures available. The written and illustrated instructions are among the best I’ve ever seen in any field of endeavor.
All of the tooling and methodology are so well thought out, engineered and built, it’s stunning.
The method you linked was overly complicated, time consuming, the jig was ludicrous, and the instructions reflected same.
For everything AR and 80%: