Beeman Sportsman Model AR2079A-177 Air Rifle with Diopter Peep Sight Precision - Beeman Air rifles provide incredible accuracy up to 10 yards. This Air gun is able to shoot groupings that will be the envy of your friends Technology - there is no longer a need to cock a spring or compress a gas ram with Beeman co2 propulsion System. The simple, yet effective, design makes these highly accurate rifles Speed - this rifle shoots a 177 caliber Pellet that travels up to 650 feet per second Features - sleek competition style beech wood stock, filled from tank by Standard g 1/2 tank connecting device, and competition diopter peep sight and interchangeable front sight insert Options - the Beeman ar2079a Air rifle is also available in a 22 caliber AR2079A-177