Arca Swiss adapters have become the standard for attaching rifles to tripods, bipods and support gear. Need to attach your MDT Chassis rifle to an ARCA interface? Use our M-LOK ARCA Rail. The MDT M-LOK ARCA Rail is Mil-spec Type III hard-black anodized. Available as a standard, flat profile that can adapt to most M-LOK compatible surfaces or as an angled profile that is designed to match the underside profile of the MDT LSS-XL Gen2. Available in multiple lengths.