About this item Performance Above All: The Killer Instinct Boss 405 Take Performance to a whole new level. A deadly combination of high-octane fire power and agility, the BOSS hits targets hard at 405 feet per second. ADJUSTABLE DESIGN: 6-position adjustable butt-stock comfortably fits a variety of users while the aluminum barrel stock is designed to withstand wear-and-tear POWER AND SPEED IN 1: Fires at a rate up to 405 feet-per-second and generates up to 134 foot-pounds on a hit, blending accuracy and striking power STEALTHY: Built-in Dead Silent limb and string suppressors reduce noise and prevent prey from noticing you as you track them AMMO INCLUDED: 3 premium Hyper carbon crossbolts are included, complete with a 5-bolt quiver