The ATN PS28-WPT Night Vision Riflescope NVDNPS2840 has been designed to provide you with the epitome of night vision riflescope technology. This NV Scope from ATN gives your daytime scope Night Vision capability in a matter of seconds. The ATN PS28-WPT NV Scope mounts in front of a daytime scope to enable nighttime operation. No shift of impact, no need to re-zero and no change of eye relief occurs. The ATN Night Vision PS-28 Riflescope uses amazing intensifier tube technology for outstanding resolution and performance.