The ALPHA is Trophy Ridge's newest sight developed to be unequalled in strength and versatility. With the entire sight being constructed of aluminum with .029 steel pins, you can be sure that this sight will take the abuse from the most extreme hunters. The Alpha's technology is unmatched in the market against any other metal sight. Trophy Ridge has incorporated it's ViPIN technology and 3rd axis rotation into the Alpha's design. If that wasn't enough, we also included the "Patent pending" Nitro Light standard on the Alpha and even added the option of the "Patent Pending" DVD dampening bracket to create the ultimate sight. This sight is unmatched in its durability and versatility. It will be perfect for the 3-D competitor and the hunter alike