The Evolution Tactical Bipod utilizes a unique under-slung design giving it a lower center of gravity, perfect for better recoil management. It also features a unique rotational mechanism using sealed roller bearings which are impervious to sand, grit and dirt. This is what gives the bipod a silky smooth movement as it rotates around the barrel of the rifle. The legs of the Evolution are pull-down action with several different detente positions. They can also be deployed at a 45 degree rake.