While these buttons technically work. They are not drop in replacements.

The ground pins will have to be tweaked to fit the hole pattern of the PCB as they were not set wide enough.

The installer will have to make sure the height above the PCB at which they solder in the buttons will not be flush, it's about 3/4mm off the board.

And finally, probably the worst part is that you will have to take some flush cutters and chop about 1mm off the actual plastic button.
If you do not trim the button down, you can't install the triggers into the body of the console without depressing the buttons, which obviously makes them always engaged and useless.
I found this out the hard way by installing them first and then trying to trim them exactly the same length without removing them from the PCB.

All in all, it was very difficult for me to find anyone selling shoulder buttons for the AGB and not the AGS, so I'll have to take what I can get.

A side note to anyone planning this work:
Getting the old buttons off the board is pretty difficult. Even wicking all the solder you can and such. I had to use flush cutters to cut the excess pin from the back of the pcb and then de-solder the button. Then once you clean up the holes, it's not too bad.

These are great if you want a really stiff click, but some might feel that they require too hard of a press.

If you decide to install them, make sure to get them in at a right angle, and be aware that you will either have to shorten the button or drill out the L+R triggers a bit. I decided to do the latter, and a 3/16" bit worked well.

I also had to scrape a slight bit off of my aftermarket shell, I think they may be SLIGHTLY wider than the original switches. It was no trouble, just something to check for if you have trouble closing the shell.