 The Seneca Dragonfly Mark II multi-pump pneumatic pellet rifle operates utilizing the butterfly high-efficiency pump system. Unlike other multi-pump pneumatic pellet rifles, the Mark II has a unique triple joint assembly comprised of a push bar, a pull bar, and a linkage joint. Utilizing this revolutionary patented pump assembly results in an incredible 50% reduction of the effort required by the user when pumping compared to the original Dragonfly. Not only does this system reduce the pumping effort, but it also maintains the same effort for each pump stroke, unlike traditional multi-pump systems where the pumping effort increases with each stroke. This makes the Dragonfly Mark II with the butterfly high-efficiency pump system the easiest multi-pump air gun to operate on the market today and possibly that has ever existed. Each time the butterfly high-efficiency pump system is employed, it engages the piston assembly, which compresses a small amount of air into an air reservoir. The number of pumps executed by the user determines the amount of air stored in the air reservoir. The amount of air stored then determines the power output of the air rifle. Operating the Mark II is done in the following steps, beginning with lifting the bolt and pulling it back. Doing so opens the breech and engages the trigger seal. These actions complete the cocking sequence. Before beginning to operate the pump mechanism, the user should engage the manual safety if it is not already engaged. Extending the pump handle forward to its maximum angle and then pulling it back to its original position creates the first pump. The Mark II is able to fire with just three pumps, but maximum power is achieved by pumping the rifle 15 times. The user can control the output power of the gun by altering the number of pump strokes for a given shot. Once pumping is completed and with the breech open, either a single projectile or a magazine that allows for multiple projectiles can be inserted. After insertion is completed, the bolt handle is then pushed forward and down, thus loading a pellet into the barrel and making the rifle ready to fire. To complete the firing process, the user disengages the safety, takes aim, and pulls the trigger. The Seneca Dragonfly Mark II employs a single-stage non-adjustable trigger. Pulling the trigger disengages the sear, allowing the compressed air to escape from the firing valve, propelling the projectile from the barrel. The Seneca Dragonfly Mark II pellet rifle employs a manual crossbolt safety. It is mechanically designed to serve as a button. Lateral force exerted on the button to either the right or left blocks or unblocks the trigger mechanism. When the button is slid to where no red coloring is showing, the trigger mechanism is blocked. When the button is slid exposing the red coloring, the trigger is unblocked.