I managed to break my primer slide, when the slide didn't move all the way into the press during a reloading stroke. This snapped the end of the slider. Lee have plenty of spares, and they are inexpensive, but I decided to try model my own based on measurements from the broken slider. I've been using this for a while now.
I printed in PAL+, but I recommend trying PETG, PLA+ eyelet snapped off when left, not in use, for an extended period of time.

Grizzly-Adams

Lee Six Pack Pro - Primer Feeder Slider

Earn this badge when visit MakerWorld more than 20 days in last 30days UTC time