This is the DevTac Japan "Ronin" helmet. Not just a show piece, this is a fully functional Kevlar level 3a bullet-proof helmet! The best part of it (for me) is that the helmet is in two halves; a backplate that's strapped to your head, and the front section fixes in place with strong magnets. I'm in the process of finding out how much these cost, but I suspect it'll be way out of my range.
Airsoft IBH Helmet With NVG Mount OPS Rail(Black)
Airsoft helmet, tactical goggles, mesh mask, and ghost gopro camera
Invader King TM Gas Mask with Lens Army of Two Airsoft Mask Protective Gear Outdoor Sport Fancy Party Ghost Masks Bb Gun INVADER KING http://www.amazon.com/dp/B00SF6TQD8/ref=cm_sw_r_pi_dp_aoZFwb06CZT5D
Batlskin Modular Head Protection System. I could get this, claim it's for decoration, and then when zombies come, POP! It's on my head! ^.^