SPECOPTICS BNVD-1431 MK2 Binocular NVG Housing Kit with Lenses

The SPECOPTICS BNVD-1431 MK2 Binocular Night Vision Device Housing Kit with Lenses is a professional dual-tube night vision platform designed for users who need a durable, highly adaptable binocular housing for custom builds. It is compatible with 18mm Gen2+ and Gen3 image intensifier tubes, including both Green Phosphor (P43) and White Phosphor (P45) options. This listing includes the BNVD-1431 MK2 housing and optical lens kit only. Image intensifier tubes are not included. Compatible tube options listed on the product page include Gen2+ and Gen3 variants with multiple FOM levels for both green and white phosphor builds.

Built around an articulated binocular design, the BNVD-1431 MK2 allows each pod to rotate independently, giving the user more flexibility during movement, observation, and helmet-mounted use. The housing supports a 140° pod rotation angle and uses a standard Wilcox dovetail interface for compatibility with common Wilcox-style mounts. It is also designed around US military standard PVS-14 optical lens components, making it easier to integrate with common replacement optics and accessories. The system supports 1.0x magnification, a 40° ±2° field of view, and adjustable gain depending on the installed tube configuration.

The BNVD-1431 MK2 is designed for more than basic tube integration. According to the technical development notes you provided, the system supports manual gain adjustment, auto-gating power compatibility, and a built-in motion sensing system for smarter power management and safer tube protection. The power button uses a 3-second long press for on/off operation. When the device remains still for about 100 seconds, it can automatically enter standby to save power and reduce unnecessary exposure of the image intensifier to the same light source. A low-battery warning indicator appears as a flashing red light inside the optic when power is running low.

For helmet users, the BNVD-1431 MK2 also supports an automatic flip-up shutoff function based on internal angle sensing rather than relying on mount magnetism. When the unit is flipped up past a special angle of more than 90°, it automatically powers down; flipping it back into use position powers it on again. This makes the housing more practical for fast transitions without unwanted shutoff when simply looking upward while worn on a helmet. The system also includes a programmable tactical settings mode: users can disable both the flip-up shutoff and static auto-sleep functions by pressing the power button five times, or temporarily disable them by pressing it three times.

For close-range illumination in dark environments, the unit includes a built-in IR illuminator. The technical notes specify activation through a button sequence, with support for 850nm or 940nm LED infrared illumination in the 0.2–0.5W range. This adds useful flexibility for users building a practical night vision setup for training, observation, or field use. The housing is also listed as compatible with E-COTI and Jerry-C clip-on thermal fusion accessories, giving it added value for users planning a more advanced fused night vision system.

Power options are another strong point of this housing kit. The BNVD-1431 MK2 can run on one AA battery for more than 15 hours under normal temperature conditions, or with an external 4xAA battery pack for more than 50 hours of runtime. The operating temperature range is listed as -40°C to 60°C, with storage temperature from -55°C to 70°C, making it suitable for demanding environments. The current product page also states an IP68 waterproof rating, helping position this housing as a serious option for users who want durability, wide component compatibility, and field-ready functionality in one binocular NVG platform.

This housing kit is a strong choice for users building a dual-tube system for tactical use, law enforcement, patrol, training, airsoft, and various hunting applications. Buyers may source compatible image intensifier tubes themselves or contact customer service to purchase matching tube options together with the housing kit.

We can provide the following night vision image intensifier tube options:

Green Phosphor (P43):

Gen2+, FOM 1400+

Gen2+, FOM 1600+

Gen3, FOM 1600+

Gen3, FOM 1800+

White Phosphor (P45):

Gen2+, FOM 1400+

Gen2+, FOM 1600+

Gen2+, FOM 1800+

Gen3, FOM 1600+

Gen3, FOM 1800+

Gen3, FOM 2000+

Gen3, FOM 2200+

KEY FEATURES

Complete BNVD-1431 MK2 housing kit with optical lenses

Designed for 18mm Gen2+ / Gen3 image intensifier tubes

Compatible with White Phosphor and Green Phosphor tube builds

Image intensifier tubes not included

Articulated binocular housing with independent pod movement

140° rotating pods

Standard Wilcox dovetail interface

Compatible with US military PVS-14 optics

Supports adjustable gain, depending on installed tube type

Built-in gravity sensor

Supports auto-gating

Integrated IR illuminator

Compatible with E-COTI and Jerry-C

IP68 waterproof

Powered by AA battery or external battery pack

SPECIFICATIONS

Product Name: SPECOPTICS BNVD-1431 MK2 Housing Kit with Lenses

Color: Black

Type: Binocular night vision housing kit

Tube Compatibility: 18mm Gen2+ / Gen3 image intensifier tubes

Phosphor Compatibility: White Phosphor / Green Phosphor

Image Intensifier Tubes Included: No

Field of View: 40° ±2°

Magnification: 1.0x

Eyepiece Diameter: 26mm

Waterproof Rating: IP68

Pod Rotation Angle: 140°

Gain: Adjustable / Variable depending on installed tubes

Mount Interface: Standard Wilcox dovetail

Power Supply: One AA battery or external battery pack

Battery Life: >15 hours with one AA battery / >50 hours with battery pack

Working Temperature: -40°C to 60°C

Storage Temperature: -55°C to 70°C

FAQ

What is included in the SPECOPTICS BNVD-1431 MK2 package?

The package includes the BNVD-1431 MK2 housing and optical lens kit. It is a housing kit with lenses, intended for users who want to install their own compatible tubes.

Does the BNVD-1431 MK2 include image intensifier tubes?

No. This product does not include image intensifier tubes.

What tubes are compatible with the BNVD-1431 MK2 housing kit?

It is designed for 18mm Gen2+ and Gen3 image intensifier tubes, including White Phosphor and Green Phosphor options.

Is the BNVD-1431 MK2 compatible with PVS-14 lenses?

Yes. The system is designed to work with US military standard PVS-14 optical lens components.

What mount interface does the BNVD-1431 MK2 use?

It uses a standard Wilcox dovetail interface, compatible with common Wilcox-style dovetail mounts.

Can the BNVD-1431 MK2 be used with E-COTI or Jerry-C?

Yes. The housing is compatible with clip-on thermal accessories such as E-COTI and Jerry-C.

Is the BNVD-1431 MK2 waterproof?

Yes. It has an IP68 waterproof rating for demanding outdoor and tactical environments.

Does the BNVD-1431 MK2 come with a warranty?

Yes. The SPECOPTICS BNVD-1431 MK2 housing kit comes with a one-year warranty covering quality-related issues under normal use.