How do the PCA Pressure Syringe and the Precision Endo Syringe Differ?

The PCA Pressure Filling Syringe has a threaded plunger in a threaded cement chamber.
It has several drawbacks.
Cement leaks past the threads and you have to dissolve the cement out of the inside threads to clean it.
The Precision Endo Syringe and it's successors, the Multi_Mode Syringe and Fine-Cut Endo Cartridge Syringe has a smooth barrel, and uses a disposable nylon ball to push the cement out.
This eliminates any blow-by of cement and when the syringe is empty it is already clean because the ball has wiped it clean.