Fits FB-O4/ACRO P1/P2 Red Dot Sights. Stainless steel socket screw holes. Raises height of optical axis to 39 mm. Fits on Weaver and Picatinny rail. Precision CNC machined from 6061-T6 aircraft grade aluminum and III Hard Anodized Finish in a matte black. Hollow design reduces the excess weight shaved off,net weight: 39g/1.37oz.
