ATN Day/Night Weapon Systems, for those who are looking for the best Day/Night Vision Riflescopes. The Day/Night Weapon Sight is an ideal Riflescope for Hunter, Military Marksman and Law Enforcement sniper. The latest advancement in Night Vision Optics – the ATN PS28 gives your Daytime Tactical Scope or Spotting Scope Night Vision capability in a matter of seconds. The ATN PS28 mounts in front of a Daytime Scope to provide it with Nighttime operation. No shift of impact, no need to re-zero or change in eye relief occurs. The PS28 Night Vision Front Sight mounts directly in front of your Daytime Scope quickly and securely without tools, making it Night Vision operational. With your Daytime Scope already zeroed, the PS28 requires no further zeroing and allows you full use of all the features of your Daytime Scope. The PS28 features top-of-the-line Image Intensifier Tubes in a wide array of configurations to fit every budget and need. The PS28 has a catadioptric front lens system which combines specifically shaped mirrors and lenses allowing for very fast focal ratios and for a smaller and more lightweight lens. The PS28 weighs in at only 840 grams. The glass optics is multi-coated for better optical view and protection from the elements. The PS28 comes standard with quick release mount. This complete Day/Night System is the ultimate solution for your 24/7 shooting needs.