1 Ring Detachable Top Mount Medium Ext Matte, Clam-49091-49091-49091

Try these to get the ideal eye relief.They let you position your scope forward or rearward.

Type: Detachable Extension Top Mount Rings
Tube Diameter: 1"
Height: Medium
Finish: Matte Black
Style: Detachable
One Or Two Piece: 2