Just the JP bolt my friend. Dont get the JP Carrier.
JP Bolt will work with the Aero Carrier. If the Aero Carrier is Nitrided is the likely it will fail the Gas Key Gauge that you and Katie used in the class.
Get a chrome lined Aero Carrier if you can. They are usually fine.
Right now the only in stock Aero options are Nickel Boron (which I know we don't like) and phospate. I think I remember you saying phosphate was good, so I was leaning towards that. They have a nitride offering, but it is out of stock. I really don't care what color it is, and I don't think I need top of the line tacticool.
What do you think of the on sale Brownells one that was mentioned?