Quote History Quoted:
I really like my TR-Enabling lower. They are on sale for $79 at the moment and do offer a jig as well.
http://shop.lower80.com/
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I also have one of their jigs.
Pros:
* Drill holes on both sides
* Top plates have full cutouts for all pockets and for trigger cutout
* Great jig for the price
Cons:
* The tops of the side plates are above the top of the 80% lower. This is an issue if you are going DRO only because your end mills need to be longer.
* Also an issue if you are going the DRO only route, notice that the pins that go in the pivot pin hole are built in to the side plates. They do not extend past the pivot pin holes to the middle so you cannot indicate of them to establish your x-axis zero.
Since I go DRO only and have a Colfax jig also, I use the Colfax jig for the milling operations and the TR Enabling jig for drilling.
Edited to add:
Link to thread showing my completed build