Mpa Scope Mount Ba 1-pc 35mm 1.250'' 0 Moa Black. But it does so much more. It eliminates the nonsense of trying to guess the distance between the two rails and the sling attachment point and gives you the confidence of securely mounting your scope. The Zero MPA Sight Mount is secured to the rear rail by ordinary bolts and looks very much like a traditional Rifle Scope Mount. However it is very strong due to the spring steel it is made of and because it can be used on any rifle with a rear sight post it can only be used on firearms with a rear sight post. Specifications for Mpa Scope Mount Ba 1-pc 35mm 1.250" 0 Moa Black: Manufacturer: MPA Fabric/Material: Alloy Color: Black Tube Diameter: 35 mm Finish: Matte Package Contents: Mpa Scope Mount Ba 1-pc 35mm 1.250" 0 Moa Black