The Riser rail fits to most 11 mm Dovetail rail on the gun actions. Its has a weaver/picatinny rail angled at 20 MOA to help reduce adjustments to zero rifle scope. It raises mounting points by approximately 20 mm.
Will fit AA S400/410/510, HW100 and many other rifles. Please note rail has 10 mm clearance above rail to fit a magazine.
This version has a 35 mm cut out slot to fit around high magazines such as Dreamline Mega 22 shot