That Equipose in your picture is a lever-filler, Kyle. Nice pens, they were Wahl-Eversharp's immediate answer to Sheaffer's Balance.
I'm sure you'll love it even if it doesn't have a piston, congrats!
Thanks for the correction -- I'm still learning the lingo!
I assume you just crank the lever up/down to load ink? How do you know when this type of pen is full?