I have 4. For me, pistons, mount options for direct thread, front caps, 3 lug setup, wrenches that came with the cans, high temp covers for 2, a tube of good high temp copper based grease, and some cases for each one that I use when transporting and to keep a stamp copy in. Oh, and a cheap toolbox to keep everything in and organized.
There are a couple of other things for a user serviceable rimfire can I have, but that is not something you need for yours.
There are a couple of other things for a user serviceable rimfire can I have, but that is not something you need for yours.