I am not sure about the Ring material. That being said replacing the Hill's rings would be almost as simple as the Yong Hengs. And I have timed every gun fill I have ever done with the yong heng to keep track of maintenance and the Hill is nearly twice as fast. Not to mention I have to put ice in the bucket for the yong heng and turn the pump on and off so if you count that it's well above twice as fast.
Upvote 0