Burris

These machined solid steel bases create a secure mounting solution. Bases are a building block of an accurate shooting system. - Properly aligns your scope and anchors it to your gun - Complements nearly any hunting rifle platform - 2-piece design - Strong and lightweight - Reversible style available for long scopes with large bells or for short scopes; allows the front ring to be set 0.850 in. farther forward or rearward