ATN's PS28 Night Vision Front Sights

carbine with a day scope and a ps28 mounted on it

The PS28 device is a night only, clip on - off, front site and comes with a near IR illuminator.

It must be mounted in front of your day scope. That allows you to keep your day scope zeroed on your weapon.

The site does not have a reticle because you will use the reticle of your day scope. It is guaranteed to change your weapon's POI ( point of impact ) no more than 1.5 MOA ( minute of angle ).

Ideally with this device an operator would have a day scope with a lit reticle or dot for daylight, dusk and dawn viewing. The PS28 would then be attached after dusk when it has become dark.

It will not work with a day scope which has a front focal lens.

The center of the tube is 1.5 inches above the rail. There fore you may need risers to raise this sight or your day scope so that the height to the center of both devices are within 3mm of each other.


  • Easily changes your daytime scope to a starlight night vision scope.
  • Mounts in front of your daytime scope, no re-zeroing required.
  • 1x magnification.
  • Fast manual front focal lens focus.
  • Remove control.
  • Resistance to all severe operating conditions.
  • Lightweight and rugged.
  • Comes with quick release picatinny mount.
  • Automatic Brightness Control System always keeps the IIT
    brightness level constant, even under unsteady brightness

Download the ATN PS28 user guide for more information.

Night vision and light levels.

  • Night vision requires some light (moonlight, starlight, the IR flash light, etc.) to operate. The level of equipment performance depends upon the level of light.
  • Starlight and moonlight are reduced by clouds.
  • Starlight and moonlight are also reduced by trees and buildings and anything else which creates shadows. Night vision is less effective when viewing into shadows and other darkened areas.
  • Night vision is less effective when viewing through the rain, fog, sleet, snow or smoke. Night vision will not “see” through dense smoke.
  • With night vision you only see shades of green or shades of grey depending on the type of display.
  • As with any night vision device, you are always looking for contrasts and movement.

Night vision generations.

  • 2
    • 40 - 45 lines per millimeter resolution.
    • 5,000 hours average tube life.
    • Signal to noise ratio 12 - 10.
  • CGT
    • 45 - 54 lines per millimeter resolution.
    • 10,000 hours average tube life.
    • Signal to noise ratio 16 - 22.
    • The CGT type of Image Intensifier tubes are engineered for significantly enhanced performance over current 2nd generation IITs ( image intensifier tubes ). The CGT IIT is a Multi-Alkali compact 18mm format MCP Image intensifier. Highlights of the CGT specifications are typical SNR of 16-22 and resolution of 45-54 lp/mm. CGT IITs are sensitive in a wide spectral band and thus provide good contrast in all scene circumstances.
  • HPT
    • 55 - 72 lines per millimeter resolution.
    • 10,000 hours average tube life.
    • Signal to noise ratio 16 - 24.
    • The HPT tube is an upgrade of the CGT Generation tube. It is a Multi-Alkali compact 18mm format MCP Image Intensifier. The HPT tube increases sensitivity, resolution, Signal-to-Noise Ratio (SNR), and the Modulation Transfer Function (MTF). These improvements produce an exceptional image clarity and brightness. Most HPT specifications typically are equivalent to standard 3rd generation.
  • 3
    • 64 lines per millimeter resolution.
    • 10,000 hours average tube life.
    • Signal to noise ratio 22.
    • By adding a sensitive chemical, gallium arsenide to the photocathode a brighter and sharper image has been achieved over 2nd generation units. An ion barrier film was also added to increase tube life. 3rd Gen. provides the user with good to excellent low light performance.
    • ATN's 3rd generation image intensifier tubes are of the highest quality. They have a micro channel plate, GaAs photocathode, and a completely self-contained integral high-voltage power supply. These 3rd Generation tubes provide a combined increase in resolution, signal to noise and photosensitivity over tubes with a multi-alkali photocathode. Generation 3 is the standard for the USA military.
  • 3A
    • 64 - 72 lines per millimeter resolution.
    • 10,000 hours average tube life.
    • Signal to noise ratio 26.
    • ATN's 3A Gen. Premium select Image intensifier tubes ( IITs ) are the highest quality of our generation 3 IITs. These IITs are hand picked to provide the highest quality and specifications available in our 3rd Gen. line. They have a micro channel plate, GaAs photocathode, and a completely self-contained integral high-voltage power supply.
  • 3P
    • 64 - 72 lines per millimeter resolution.
    • 10,000 hours average tube life.
    • Signal to noise ratio 26.
    • ATN Night Vision units with the 3P designation use ITT Pinnacle™ Image Intensifier tubes. The industry leading ITT Pinnacle™ image tubes utilize a gated power supply providing truly outstanding performance in high-light or light-polluted areas, such as urban environments. The Pinnacle™ tube with gated power supply minimizes any “halo” effects. “Halo” is often associated with using night vision devices in an urban area where random street lights are often an issue with early Generation Night Vision devices. Night Vision units with Pinnacle™ tubes have a resolution of 64-72 lp/mm and a typical signal to noise ratio of 26. All Night Vision devices utilizing Pinnacle™ Image Intensifier tubes come with ITT data record sheet. Units with Pinnacle™ tubes are not available for export.
  • WPT ( White Phosphor Technology © )
    • Typically 60 - 74 lines per millimeter resolution.
    • Signal to noise ratio 18 - 26.
    • 10,000 hours average tube life.
    • Studies show that nighttime scenes appear remarkably more natural in black and white versus the usual green. B&W provides clearer information about contrast, shapes and shadows. ATN's White Phosphor Technology© provides users with this natural B&W night vision image.
    • Operators that tested units that use ATN WPT™ reported a significantly better degree of detail, overall contrast, full moon similarity and range of shades. WPT™ provides more discriminating shades of intensity between white and black than between green and black resulting in better contrast and depth perception then when compared to green phosphor NVG’s.
    • 7 out of 10 users name WPT™ as a “Night Vision Preference” when compared with common green night vision, especially in an urban environment. “No lab testing needed on WPT™ – the depth perception is phenomenal and noticeably better than what I used in the past.” – SOF Operator K.
    • Designed for Special Ops, WPT™ is not a toy. If your life depends on your gear and you want to improve your operational effectiveness you should check it out.
  • 4
    • 64 - 72 lines per millimeter resolution.
    • 10,000 hours average tube life.
    • Signal to noise ratio 25 - 30.
    • 4TH GENERATION GATED/FILMLESS TECHNOLOGY represents the biggest technological breakthrough in image intensification of the past 10 years. By removing the ion barrier film and “Gating” the system Gen 4 demonstrates substantial increases in target detection range and resolution, particularly at extremely low light levels.
      • The use of film less technology and auto-gated power supply in 4th generation image intensifiers result in:
        • Up to 100% improvement in photo response,
        • Superb performance in extremely low light level (better S/N and EBI),
        • At least triple high light level resolution (a minimum of 36 lp/mm compared to 12 lp/mm).
      • ATN's Autogated / Filmless inverting image intensifier tubes improve night operational effectiveness for users of night vision goggles and other night vision devices. The filmless micro channel plate provides a higher signal-tonoise ratio than standard 3rd Gen. IITs, resulting in better image quality under low-light conditions. An Autogated power supply further improves image resolution under high light conditions and a reduced halo effect that minimizes interference from bright light sources. The reduced Halo maximizes the effectiveness of the Night Vision device in dynamic lighting conditions such as those experienced, for example, in night operations in urban areas.
    • With significant improvement in contrast level and in performance under all light conditions, 4th generation represents the top of the line performance in the night vision market.