The Caldwell AR Bipod combines a quick attach system for securing to any picatinny rail with all the other outstanding features you have come to expect from Caldwell. Built in systems for both pivot and cant movements give you maximum range of alignment without having to reposition the bipod. The unique internal spring system is both low profile and quiet, and the unique leg adjustment mechanism delivers fast and secure, no-wobble height positioning. The AR Bipods feature rubber feet that ensure good grip on all surfaces.