Evolution Gun Works HD Picatinny Scope Mount Steyr SBS Pro Hunter Classic Short Action 0 MOA 7.458in Aluminum Matte Black. Mounting Hardware:#6-48 X 1/4 Screws and T-10 Bit IncludedTorque Specs: 20 in/lbsCenter Spread:2.44''Overall Length of Mount: 7.458"This mount comes standard with a bevel on both sides making it ambidextrous.The center spread is the distance between the two middle holes center to center on your receiver.These bases sit at approximately 0.35 high.Picatinny cross slots run the full length of the rail which gives the shooter flexibility when mounting scope rings and other accessories. The cross slots are also machined the full width of the mount and gauged to MIL-STD 1913 specs maintaining tolerances of +/-.002".After machining; the mounts are tumbled and sand blasted. The aluminum mounts are Type III hard coat anodized for long lasting durability. The steel rails are Mil Spec parkerized for a durable rust resistant finish.Werecommend:0 MOA -if shooting 0-500 yards20 MOA -if shooting 500-1000 yardsWhen zeroing your rifle with a 20 MOA mount we recommend zeroing at 200 yards.Compatible with Picatinny or Weaver scope rings. Add EGWs HD Scope Rings to make it a complete packageFrom manufacturing to packaging EGWs products are made with pride in the USA.Installation: EGW recommends 20 inch lbs of torque and a drip of blue loctite (loctite is available through our website and is sold separately). Specifications for Evolution Gun Works HD Steyr SBS Pro Hunter Classic Short Action Picatinny Rail Scope Mount: Manufacturer: Evolution Gun Works Color: Black Finish: Matte Fabric/Material: Aluminum Quantity: 1 Hand: Ambidextrous Gun Make: Steyr Gun Model: Steyr SBS Steyr Pro Hunter Action Length: Short Action Gun Type: Rifle Length: 7.458 in Height: 0.35 in Additional Features: Short Action Included Accessories: T-10 Bit #6-48 X 1/4 Screws Condition: New Mount Type: Picatinny Ring Type: Picatinny/Weaver Attachment Type: Picatinny Gun Rail: Picatinny Package Contents: Evolution Gun Works HD Steyr SBS Pro Hunter Classic Short Action Picatinny Rail Scope Mount Evolution Gun Works 81070: HD Steyr SBS Pro Hunter Classic Short Action Picatinny Rail Scope Mount 0 MOA 7.458 in Aluminum Matte Black