EDIT - See the post below; looking for more info on the liquid seals.
I had the Redux completely apart yesterday and had some spare pierce pin assemblies on hand which I
think were standard CCI's.
The CCI's had about twice as much threading as needed for the Redux so I cut them down.
More accurately, PMI 3 cut them down with his razor saw!
If they were left long, they would interfere with the cup-seal or valve spring. Cut cown, they fit perfectly.
Shown below is the DD68 Redux valve and the cut pierce-pin assembly that came installed as well as an uncut CCI assembly. NOT shown: the o-ring that seals the assembly and acts as a spacer. (don't omit that o-ring or you'll likely have a massive leak on your hands!)
From the valve insert thread, the second photo shows the total length of the pierce pin assembly, subsequent to cutting it down.
