This mount was previously marketed as a "Golden Boy" mount. That information was incorrect. This rail will only fit the Big Boy rifles. We always recommend verifying your hole spacing to confirm fitment. Specifications Rail Type: One Piece Picatinny Machined from: Domestic 6061 T6 Extruded Aluminum Finish: Matte Black Anodizing Rear Spread: .5" Front Spread: 2.4" Overall Length: 4.306" Height: .4" (Top of Receiver to Top of Picatinny) Weight: 2 oz. Quick Disconnect Ring Compatible: No Ambidextrous: Yes Torque Specs: 20 in/lbs Mounting Hardware: #8-40 X 1/4 Screws and T-10 Bit Included