Browning A-Bolt Short Action Base - One Piece Guarantees Accuracy

One piece guarantees accuracy. Ring placement allows eye relief adjustment. Made of billet aluminum. Machined one piece design for extreme accuracy. No moving parts between firearm and scope. Lightweight. Approximately a third of the weight of steel. Fast installation and requires no special tools. Eliminates need for windage screws. Perfect ring alignment. No lapping required. Eliminates or reduces scope damage from tightening rings. Up to 4 times more thread length in rings.Full 1/2 inch.