I have used the Burris Extreme Tactical rings for some years now. They are a massive 6 screw design with a 1/2 inch nut to tighten them on the base. The height are sized: 1/4,1/2,3/4,and 1 inch,so easy to figure out and work with. They are wide rings so make sure that you have enough scope for them. (I believe 1")
They come in 1 inch and 30mm. --- SAWMAN






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