The Armortech-HD was voted best buy winner, from inside archery magazine, itÆs very first year on the market! The Armortech-HD packs a punch with its superior patent pending technology, innovative design, and deadly accuracy, features fibers that are protected their entire length by AxcelÆs A.F.T. (Armor Fiber Technology) and an innovative scope design T.C.V. (True Center Vision). All Armortech-HD sights include a Mathews Harmonic Damper. With the ever growing demand of super high speed bows, the new HS (high speed) option is Light years ahead. Due to our thin pins, target obstruction is reduced.