Pos-Align Inserts guarantee perfect centering and maximum scope-to-ring contact, so you get all the clarity, sharpness, and brightness your optic can deliver.

Virtually sight in your gun without moving the scope adjustmentsCorrects any misalignment caused by receiver holes drilled off-centerCorrects for bases or rings being slightly off centerMakes expensive tapered bases or shimming for thousand-yard shooting a thing of the past

This 1" Burris Signature Pos-Align insert has a +/-.020 eccentric offset.