Badger Ordnance's Remington Short Action Scope Rail is a heavy-duty steel base with built-in forward angle bias so you can take those ultra-long-range shots without exceeding the elevation adjustment of your scope. The Badger Ordnance Remington Short Action Scope Rail has a MIL-STD 1913 Picatinny slot pattern for maximum compatibility with the many Picatinny tactical scope rings currently available. Bore height dimension is .31" The Badger Ordnance Remington Short Action Scope Rail has an integral recoil lug that ensures this base won't move, even when shooting the hardest-kicking cartridges. Mfg: Badger Ordnance