The A.R.M.S. #35 Ultra Low Rings attach to the A.R.M.S. rail foundations that have stainless steel helicoil threaded holes imbedded into the center channel of the rail between the Mil-Spec dovetail rails. These rings offer perfect solid alignment and are crafted in the distinctive shape and style of the A.R.M.S. line of rings. Mounting screws and wrenches included. Mfg: A.R.M.S.,Inc Specs: 30mm, Height: .900 measured from the center of the optic to the top of the rail
