The Modular Arca Rail System (M.A.R.S.) is manufactured from ONYX and reinforced with continuous strand carbon fiber. These arca rails provide a very good balance of strength and weight, and adhere to the RRS Dovetail Standard. This modular system allows you to combine any of our arca rail sizes and the hardware included is stainless steel for corrosion resistance.
(Note: It is not recommended to “cantilever” the M.A.R.S. very far beyond the end of your rifle system. Doing so may result in unsatisfactory performance.)