Here is a video of the KAC Precision Bipod, a highly adjustable bipid with swivel and track capability. It can be deployed to 6 positions and has a single push-button retention feature for easy mounting and dismounting... "Developed to meet the requirements of the US Army CSASS program, the KAC Precision Bipod is a precision machined, highly adaptive design that offers shooters ideal adjustability and control.

The QD Bipod attaches easily and securely to any Mil Std 1913 Picatinny rail surface via a simple push button and locking lug arrangement, and incorporates locking legs that can be independently positioned from 90 to 270 degrees. Additional features include adjustable leg height from 6.875 to 9.25 inches, removable feet (Atlas foot compatible), Adjustable Cant, Adjustable Yaw, and Adjustable Cant/Yaw Tension Control. Intelligently designed and superbly executed, the KAC QD Bipod packs a lot of performance into a compact, robust package."