I just got a bunch of PASGT covers in and for the most part they have those velcrow straps that go through the webbing of the helmet and fit fine but I have a cadpat one that has a plastic bill at the front edge and it also has these two (4 total) plastic tabs that are around 1-2" long. I am assuming that these use a different system to connect and fit snug in the helmet. If anyone has any wisdom on the isssue please post here.