This is a AmeriGlo Sight known as the Spartan Tactical Operator, model GL-450.
Built on the classic 3-dot design" the Spartan Operator sights feature a glare-reducing rear tritium sight design with black outlines and the popular ProGlo orange outline tritium front sight" delivering faster front sight acquisition by maximizing front sight visibility and minimizing rear sight distractions while still providing a 3-Dot tritium configuration for low-light use.
Features:
Green tritium .140 wide with orange outline front
Green tritium 2-dot .160 wide square notch with black outline rear
