My CP pistons came with NPR rings. I can't find any good info on ring end gap for these rings. NPR was no help and still waiting to hear from Carrillo.
top ring MG10-4505
second MS20-4505 THG
oil ring D30
Anyone have any info on these rings they can share?

http://www.youtube.com/watch?v=aIxaesJ190U

http://youtu.be/lCZAaN7fFLg