Like the Rock chucker, there are also spent primer catcher upgrade kits for the Rebel.I have a Rock chucker and a Rebel. My only complaint with the Rebel is spent primers. They hit the linkage when they come out of the bottom of the ram. And they go all over the place. 1 out of every 4-5 will miss the bucket and shoot across the floor
https://primercatchers.com/product/rcbs-rebel-reloading-spent-primer-catcher-upgrade/
There are other sources, I.e., eBay.