Cadex Defense 03127-A017 5-inch Modular Picatinny RailCadex Modular Picatinny Rails are designed to fit on Cadex modular products such as rifles, chassis and shotgun accessories. Most rails also fit Remington® products such as the MSR rifle and RACS chassis. The 3?, 3.5?, 5? & 9? rails bolt on the Cadex proprietary 10-32 slot mounting pattern. The Centre Bipod Rail and Centre Accessory Rail Kit are installed on most Cadex rifles and chassis systems. All rails are made of aircraft grade 6061-T6 aluminum and include mounting screws. Features: Dimensions: 4.9" x 0.83" x 0.37"Weight: 0.071 lbs. Material: Aluminum 6061-T6 Cadex Defense 5 inch Modular Picatinny Rail 03127-A017