NubyTech is a third-party accessory developer creating unique controllers for a variety of game systems. In the late 90's they released a variety of light guns for the PlayStation and other systems. The Sniper featured recoil vibration, auto-fire, auto-reload.
There were two primary light gun standards developed for the PlayStation: the Justifier designed by Konami, and the GunCon designed by Namco. The two standards were incompatible, and most light gun games supported only one or the other. The Sniper has a two-mode switch which allows it to be compatible with games designed for either standard.