The full monty. Remember, you don't need support material to print any of these guys.
Deckmate Killswitch Adapter
Print this one if you want to use the Deckmate mounts with your Killswitch case!
You do not need to print with support material, most printers can easily bridge this overhang.
Some users have reported that this can be a little tight to assemble. This largely depends on your printer. If you find your part printed too tightly, warm it with a hair dryer and shape it into place once. Afterwards it will fit perfectly.