The D3G is our entry level optic selection. Utilizing a solid construction and mounting system, our sight uses the thumb screw allow it it to fit both weaver and picatinny rails. Features a true 4 Moa Dot available in 9 different brightness settings. That will give you up to 2000 hours of run time, while utilizing a 4 hours auto turn off switch. This is a great sight for someone that is new to optics or anyone using a lever action rifle.