The ARCA Rail was designed to give the flexibility and ease of use that is needed for mounting rifles. Mount the Arca Swiss tri-pod or bi-pod, picatinny rail accessories, and a Harris bi-pod all on one mount. The ARCA 3-Way Rail beautifully incorporates 3 popular accessory mounting options. Now, there is an all in one solution to mounting your rifle, no hassles guaranteed. The ARCA 3-Way Rail allows for Arca Swiss quick release accessories to be seamlessly attached to rifles. Also incorporated to the design is a picatinny rails for accessories like flashlight mounts, laser, or a handstop/foregrip.