I received my APP Oct 15, 2021.
This actually makes depriming fun. I don't think it's possible to set up for priming. Lee has a separate priming tool for that. In my case, I rely on the Dillion 550c to feed primers and seat them after sizing.
I purchased the rotating 4-tube feeder system
https://www.midwayusa.com/product/1020023248?pid=868423
and the case collator tray that fits on top of the four feed tubes.
https://www.midwayusa.com/product/101300663?pid=244455
Also bought the primer pocket swage kit that removes the factory crimp from both large and small primer pockets.
https://www.midwayusa.com/product/1022387359?pid=983551
While you can screw the press to your benchtop, the Bench Plate Kit is helpful for mounting and quick removal.
https://www.midwayusa.com/product/101282199?pid=113651
I screwed a simple angle bracket to the front of my bench that catches the lip of an Akro-Mils bin. This bin receives processed brass.
If you mount this bin bracket a bit lower than shown, it allows you to position the bin to the right or to the left. Sometimes the brass comes off to the right (depriming and pocket swaging) and sometimes it goes straight down (debulging or bullet sizing). Otherwise you put a bucket on the ground to catch the brass or bullets.
Depending on your grip, you may desire the roller handle, though the standard non-rotating red handle works fine for me.
https://www.midwayusa.com/product/1022927486?pid=443097
Personally, I can't say enough about this press. I've processed 9mm Luger and .45 ACP so far -- depriming and swaging the primer pockets. The breechlock quick-change system allows dies and rams to be changed out in seconds and after a bit of adjustment, the press is so fast I find myself pulling 9mm out of my range-pickup bin just to run 50 cases through the press to hear the primers pop out. It's just so darned fast it's a dream. No dirty hands.
The Pro 1000 4-tube loader and the collator tray allow you to load up the tubes in seconds.
Go to YouTube and enter "Lee APP Press review." Many videos will come up to familiarize yourself.
One of the confusing parts I skipped at first was not snapping a "riser" onto the clawed shuttle.
Amazingly, the press still works without a riser, but not very well. Adding the proper riser made all the difference!
The taller the case, the taller the riser you need to add. Small cases like 9mm and .45ACP take the thinnest riser.
Because I reload so many calibers, I purchased a Lee X-Press shellholder kit.
https://www.midwayusa.com/product/1022927226?pid=883529
These shellholders are different from normal "universal" shellholders utilized in most presses. Note they are not as strong, so don't be resizing giant cases like .308 Win or you'll rip the rim right off the case and end up with a case stuck in the sizing die.
I don't think I'd do sizing in this little press in any event. I've got burly Dillons and a Rock Chucker for heavy duty work.
The APP kit comes with three X-Press shellholders (#2, #4, #19) suitable for 60 calibers, per Lee. But check to make sure you don't need additional shellholders for your particular calibers. This cross-ref chart for which holder goes with which caliber is here:
https://leeprecision.com/X-press-Shell-Holders-ID.html
The APP also comes with a single Lee "Breechlock" die adapter. You may need to buy a couple more of those adapters.
https://www.midwayusa.com/product/1012849384?pid=971565
Bottom line: I love my APP.