Umarex's AirSaber is flinging arrows with no strings attached! The Umarex AirSaber uses high-pressure air to propel a 376-grain arrow at velocities up to 450 feet per second with a fully charged air tank. Arrows shot from a full tank reach energy levels over 169 ft-lbs. This is more than enough for hunting big game and is, in fact, legal in 10 states for deer and most states allow for predator/feral species hunting with devices of this kind. The AirSaber uses a special carbon-fiber arrow that weighs 276 grains by itself. These arrows accept standard and mechanical broadheads and are easily changed out.