Sun Optics Universal Cantilever Ribs Up To 3/8In. Scope Mount. Specifications for Sun Optics Shotgun Saddle Mounts: Manufacturer: Sun Optics Color: Black Included Accessories: Installation Tools Gun Rail: Picatinny Finish: Satin Black Quantity: each Gun Type: Shotgun Fabric/Material: Aircraft Grade Aluminum Condition: New Features of Sun Optics Rifle Scope Shotgun Saddle Mounting Base: Full length rail Perfectly contoured to receiver Installs using existing ports Lightweight aircraft aluminum Satin black finish Package Contents: Sun Optics USA Shotgun Saddle Scope Mounts What firearm models does the manufacturer say Sun Optics Shotgun Saddle Mounts is compatible with? The manufacturer says that Sun Optics Shotgun Saddle Mounts is compatible with Browning BPS Browning BPS 12 Gauge Winchester Model 1300 Winchester Model 1200 Winchester Model 1400 Winchester Model 1500 UniversalSun Optics SM6175: Universal Cantilever Ribs Up To 3/8In. Scope Mount