With over a year of input and development, Cadex is releasing the ARCA Elite System (AES). The AES system is designed for a quick and smooth manipulation that locks up solidly. Using two stainless pins, the AES clamp locks into the precision machined serrations down the center of the ARCA Rail creating a system that will not move, even under the most extreme conditions. This is a huge improvement over the original ARCA design well known to slip under recoil.