Just received my Airmaks Krait x in 22. I bought a Huma reg for it. The reg came up with the bottle pressure until both hit 160bar, at which point I stopped filling. I posted under PCP Airguns asking for help. No help, just one statement based on a wrong assumption, and one that could have caused more issues. So, I pulled the manometer and discovered l am the owner of a MK1, not a MK2. Utah Airguns sent a MK2 reg witch is the problem. Disappointed about getting the MK1 instead of the MK2. I'll see what UA has to say. Hopefully I'll be able to exchange it for the MK2, but their policy has me in doubt. I'll be back here after I have talked to them. Been a customer of theirs for several years, so hoping for the best. Bill and Addi