KINETIC RESEARCH GROUP ARCA RAIL, SHORT The KRG Arca Rail Short gives you Arca-Swiss rail functionality for your Non-ARCA Spigot Mount or your Echo chassis. It's low profile, light weight, and unobtrusive. Can be attached to the base or mid section of the Echo Chassis' forend for use with a tripod. It makes a great platform for your ARCA compatible bipod when used on a standard or minimalist Spigot. FITS: KRG Spigot Mount (non-ARCA) Minimalist Spigot Mount and Echo Chassis Restrictions: Use as many fasteners as possible to mount the rail to maintain rigidity. SPECS Weight: 1.4oz Length: 3.6" Material: Mfg: Kinetic Research Group