I ran into the end of shop hours before I did the driver side milling on my first paper weight, got distracted by another project, and finally got around to revisiting the problem.
The first learning experience here is that the nice setup I used cutting the bolt stop slot and magazine release was not going to work for the pistol grip cut with the vise jaw in the way.
The second was that it would have made more sense to just use a taller set of parallels to elevate the pistol grip surface above the vise jaws the first time around.
After leaving the shop I realized this all came from my wood working background -
1. I think of setup in terms of one (fence distance) or two (add a stop) dimensions.
2. Setups tend to be for one cut but perhaps multiple pieces.
3. It's often easy to arrange to get back to exactly where I was if I forgot something - I have miter sled fence stops every 1/32", a couple of flip stops on the drill press fence, clamp a couple of wood blocks behind the router table fence to establish final pass depth, etc.
4. Setups are fast with a lot of tolerance so getting something wrong is not a big deal. It's easy to get within 1/32" or 1/64" which is generally good enough when multiple copies of a piece get made at the same time. Where things really need to fit it's often easy to trim to fit - I can make a box top 1/8" over sized and run around it with a router flush trim bit after gluing it on.
It's still lots of fun.
)
