Rocky Mountain Axe 440 Crossbow Pkg Black 30.5" At a maneuverable, stable and easily shouldered 30.5-inches long and less than 12-inches axle-to-axle (cocked) the weight of the AX440 is centered over the shooters hand by way of a balanced shoot-through stock and riser design and reverse limb system. This configuration empowers the most efficient part of the split limb system from just 15 inches of power stroke to launch bolts at 440 feet-per-second. When combined, the proprietary cam systems features center the string to move along the same plane throughout the entire power stroke. Unlike the one-piece aluminum rail concepts of conventional crossbow designs that rob speed, efficiency and bolt life, the stock of the AX440 also eliminates the rail and utilizes dual carbon guide rods along the entire length of the stock. When combined with a shoot through riser and a tunable roller rest these features create a free-floating arrow system that minimizes contact, friction and torque along the arrows entire path. The result; greater efficiency, accuracy and speed output. The AX440 also puts to work the proven small diameter 19-inch (.166 I.D.) bolt system to produce extreme accuracy, durability, penetration and safety. The interaction between the bolts premium aluminum capture nock system and the bows string create an audible sound to note full connection and preparation to interface with the trigger system for unprecedented safety.