The Cold Harbour Ruggedized Aluminum J-Arm (RAJ) is a full-aluminum dovetail mount for a PVS-14 or other monocular night vision device. It is made in Canada by Volk CNC Machine from 6061T6 aluminum and is Cerakoted.
The arm geometry is built around the Cadex and Wilcox NVG mounts, so the PVS-14 stows close to the helmet. The device can swing out of view, and it can move from one eye to the other without buttons or other mechanisms. The arm turns on a precision-machined shaft. Swing tension is pre-set and can be loosened or tightened. Steel washers on each side of the arm protect the finish and hold the friction setting.
A retention loop at the rear of the dovetail keeps an elastic retention tether from pulling the device out of alignment. It also pulls the device back into the dovetail if the dovetail release button is pressed by accident. The mounting point is doglegged back 0.3" to bring the PVS-14 closer to the face, which gives a wider field of view. Lightening cuts reduce weight, which leaves room on the helmet for other equipment such as thermal clip-on devices or mission recorders.
- Material
- 6061T6 aluminum, Cerakoted
- Weight
- 36 g
- Fasteners
- Cerakoted stainless steel; knurled mounting screws on versions from Summer 2024
- Dovetail
- True Milspec tolerances
- Mounting shoe
- Anti-rotation hump that fits the slot in the PVS-14
- Mounting offset
- Doglegged back 0.3"
- Retention
- Retention loop at the rear of the dovetail
- Swing tension
- Pre-set, user adjustable
- Compatibility
- PVS-14 and monocular NVGs; designed around Cadex and Wilcox NVG mounts
- Made in
- Canada, by Volk CNC Machine