Traditions 30mm High Matte Tactical Scope Rings Finish – Matte Black If you are looking for some rock solid scope rings, then check out Traditions Tactical Scope Rings. These scope rings are perfect for mounting to your AR-15 rifle, and 30mm in diameter. They are a medium height, and come in a black finish. These scope rings use 4 screws for maximum hold. Works on flattop AR platforms Extremely sturdy Oversized hex nut ring bases and hardware provide rock solid attachment to your mounting platform Extra-wide ring design securely holds scope in place