There are different manufacturers of this type of moisture barrier, but I don't know if it could be laid underneath the Barricade modular floor system.

I also know that there is something similar to a carpet underpad that claims to give an R value of just over 1, but I couldn't find it when I searched for it. Something like that, along with the Dri-core modular floor would give you the same insulating value as the Barricade modular floor.

The only reasonable argument for owning a gun is to protect yourself from the police.