Precision Reflex Savage S.A. 7in Steel Base Full 1913 Rail Black. Comes with (4) #6-48 torx mounting screws Base is 7in in length with 20moa and is ambidextrous. Weighs 6 ounces. On the Standard Savage base the rear mount is flat and the front has a radius. Rear base elevation is .515in and front is .360in Specifications for Precision Reflex Savage S.A. 7in Steel Base Full 1913 Rails: Manufacturer: Precision Reflex Color: Black Finish: Phosphate Fabric/Material: 1141 Steel Gun Make: Savage Action Length: Short Action Length: 7 in Width: 0.835 in Height: 0.5 in Weight: 6 oz Gun Rail: Picatinny Package Contents: Precision Reflex Savage S.A. 7in Steel Base Full 1913 Rails Precision Reflex 02-176-03: Savage S.A. 7in Steel Base Full 1913 Rail Black