The Kinetic Research Group Arca rail gives you Arca-Swiss rail functionality for your KRG Whiskey-3, X-ray, or Bravo chassis. It's low profile and light weight and mounts to the bottom of the forend without being obtrusive. There are limitless possibilities for mounting and positioning accessories to your chassis with this rail. Attach your bipod or the KRG Barrier Multi-tool to the Arca Clamp or another brand's clamp and quickly position your item anywhere along the rail, for example. You can easily remove or re-position for the next stage or even during a stage. Fits: KRG Whiskey-3, X-ray, and Bravo chassis.Note: Use as many fasteners as possible to mount the rail to maintain rigidity. Does not work on 180-Series chassis.