T3S is an extreme duty optic that exceeds MIL-STD 810 standards for waterproofing, shock resistance, and exposure to extreme weather conditions. The 30mm objective lens provides exceptional clarity in low light conditions as well as an extra wide field of view. It is offered with either a MIL-STD 1913 rail mount or optional quick disconnect mount. Easy access waterproof buttons allow the operator to adjust the red dot brightness levels and shift from daytime to night vision mode with the press of a button.