Badger Ordnance’s Savage 110B Scope Rail is a heavy-duty steel base with built-in 20 MOA forward angle bias so you can take those ultra-long-range shots without exceeding the elevation adjustment of your scope. The Badger Ordnance Savage 110B Scope Rail has a MIL-STD 1913 Picatinny slot pattern for maximum compatibility with the many Picatinny tactical scope rings currently available. Fits Savage model 110B bolt action rifles ONLY Machined from pre-hardened, ordnance-grade 4142 carbon steel Hard, anti-corrosion matte black mil-spec manganese phosphate Parkerized finish Bore height dimension is .31" The Badger Ordnance Savage 110B Scope Rail has an integral recoil lug that ensures this base won’t move, even when shooting the hardest-kicking cartridges.