Warne Aimpoint Acro Shotgun Rib Mount. Many popular shotgun models are not drilled and tapped for a conventional scope base or rail. Warnes proprietary clamp design attaches directly to a vented rib barrel and allows for a low-profile universal mounting plate that fits most popular red dot sights. While the Warne Shotgun Rib Mount is great for turkey waterfowl and upland bird hunting it is equally effective for clays competition and tactical use. Specifications for Warne Aimpoint Acro Shotgun Rib Mounts: Manufacturer: Warne Color: Black Finish: Matte Gun Type: Shotgun Fabric/Material: Lightweight Aluminum Aluminum Fit: Aimpoint ACRO Optic Cut: Aimpoint ACRO Length: 2 - in Width: 1.25 in Height: 0.625 in Weight: 1.7 oz Mount Type: Rib Mount Features of Warne Aimpoint Acro Shotgun Rib Mounts 6112M Fitments Mini RDS sights with the ARCO interface Red dot not included Fits Most Shotgun Ribs Package Contents: Warne Aimpoint Acro Shotgun Rib Mounts Warne 6112M: Aimpoint Acro Shotgun Rib Mount