Norotos RHNO II Helmet Mount PVS-15/18/21/31 Dovetail Black One Size. Developed through extensive engineering and delivered through precision manufacturing the RHNO II D supplies heightened stability according to the Norotos' standard of Anti-Wobble Optimizationcentering on enhancement of each component connection point throughout the helmet mount assembly. Superior safety enrichments ensure an ergonomic custom-fit user experience fortifying expanded field use longevity. A lower profile reduced silhouette augments the NVG center of gravity promoting the natural alignment of the head and neck in reducing muscle strain and fatigue. Force-to-Overcome Deploy/Stow Release secures safe reliable goggle flip-up/flip-down activated under sensibly firm user pressure. Intuitively placed design features provide a mechanical advantage through user-friendly operations with safe and easy tactile differentials including Glide-Rite Infinite Adjustable for Vertical Tilt and Fore/Aft-Eye-Relief Adjustment. While permitting rugged versatility in individually tailored-like user wearability the RHNO II D maintains a securely stable platform with positive lock adjustment levers. Building while expanding upon Norotos' legacy product-linethe RHNO II D supplies an enhanced platform for night vision goggle systems that is safe reliable and durable. All while reaching to the very pinnacle of Anti-Wobble stability in a commitment to the continual progression of equipping soldiers law enforcement and outdoorspeople for over two decades. Specifications for Norotos RHNO II Helmet Mount for Dovetail Style PVS-15/18/21/31: Manufacturer: Norotos Color: Black Condition: New Additional Features: For PVS-15/18/21/31 Country of Origin: USA Features of Norotos RHNO II Helmet Mount for Dovetail Style PVS-15/18/21/31 Ergonomically Optimized Vertical Tilt and Fore/Aft-Eye-Relief Adjustment Levers for a custom-fit user experience Helmet Mount Release Button allows quick one-handed release from Helmet Bracket or Shroud Force-to-Overcome Deploy/Stow Release enables single-handed decisive user pressure flip-up/flip-down Dovetail Style NVG Compatible for PVS-7A/C PVS-15 PVS-18 PVS-21 & PVS-31 Glide-Rite Infinitely Adjustable in both vertical and horizontal directions Reduced Weight & Enhanced NVG Center of Gravity prevents user fatigue allowing long-term ergonomic wearability Auto Shut-Off when NVG in stow position or removed from mount Durable Helmet Mount Surface Finishes withstand extreme environmental and field conditions Safe & Easy Operational Tactile Differentials on operating levers knobs and buttons Package Contents: Norotos RHNO II Helmet Mount for Dovetail Style PVS-15/18/21/31 Norotos 1950010-D: RHNO II Helmet Mount PVS-15/18/21/31 (Dovetail) Black One Size