Naval Special Warfare Group 2 just released an RFQ for the ever-popular Ops-Core FAST Base Jump Military helmet.
Integrated military style Head-Loc chinstrap
Lightweight, multi-impact, ventilated liner with repositionable EPP impact pads and LDV closed-cell comfort foam that is not affected by temperature, altitude, or moisture
1/2" and 3/4" EPP pads come with the helmet
Occ-Dial adjustable fitband with replaceable leather front, nape, and side pads quickly detaches to allow convenient donning and doffing of COMMs headsets with internal top headbands
FAST-ARCs - 4 Position Accessory Rail Connectors: non-snag attachment points for quick yet secure donning or doffing of headborne accessories, including lights, cameras, goggles, COMMs, mandibles, etc
Molded-in front mount to attach lights, cameras and NVG brackets
Bungees for NVG stability
Side Velcro hook for patches and illuminators
Includes a Picatinny Adapter and Wing-Loc Adapter for the side rail and Universal Adapter for the front mount
The Ops-Core helmet design is truly badass and while I don't have any first hand experience using one in a combat zone, my boy over at Gear Scout swears by his.