Also a few corrections: IDZ is not a brand but the name of an R&D project to modernize the Bundeswehrs gear. It stands for "Infanterist Der Zukunft" (literally: infanterist of the future) Since the gun light contais both a Laser and a Light it's called LLM 01 Otherwise cool video! Cheers and greetings from GER!
Roman Kurmaz Covers (as all his gear does) have a little "Kurmaz Gear" label on the inside. So if there is no label this is probably not one of them. I actually own 2 and both of them don't feature the "front lip" that hugs around the helmet. I know only know of one repro that feature this lip (there could be others of course): Deichtaktik! He was a private tailor doing repros and other custom gear based in Germany. Closed business a few years ago tho