Thinking about giving this a shot. Curiously, if I bought this jig...what else am I going to need to be able to finish an 80% lower?I just bought this jig and I am extremely impressed of the quality of the finished product. This jig is amazing. It has a bearing guide for the bit and you never touch the jig with the bit. It takes about 50 minutes to complete a receiver including drilling the holes. Plus a brand new DeWalt router.