Doesn't get any better than that!
I toyed with the idea of making up a few of these kits using my machine shop connections through work...then I saw how much M2 bolts cost!! Wouldn't leave a lot of money on the table after buying up a few of those.

The insert and insert tool wouldn't be a big deal.
The magazine well would be a bit of a trick but doable.
But buying those bolts...yikes.