This is an extended design made by Hongye Uzi. The design draft will be drafted around mid -2022. That is, after the discontinuation of the Red Leaf Uzi. Two versions were made:
This is version 1 (self-pressure needle version)
There is also a version 2 (small compact)
(It was abandoned after the 3D printing prototype and the installation test. As for the reason of giving up……… Hahaha, let's not talk about it)