Features:Precision CNC Machined 6061-T6 Aircraft Aluminum Base with Steel A2 Sight AssemblySlim and Lightweight Profile with a Durable Wear Resistant Matte Black FinishTool-free Windage and Elevation Adjustment with Dual Apertures Ideal for a Variety of Different ScencariosUtilizes a Single Locking Torx Screw and Square-shaped Integral Recoil Stop for a Secure Zero Hold and Return to Zero on MIL-STD-1913 Picatinny RailsSpecifications:Material: AluminumWeight: 3.5 ozPieces: 1Rail Type: Picatinny/WeaverLength: 2.4 inchWidth: 1.3 inchHeight: 1.8 inch