Telescopic nozzle for an air gun with safe pressure release

A telescopic extendable nozzle attachable to a pressurized source of gas. The nozzle permits blowing out otherwise inaccessible crannies with the nozzle extended or providing a blast of air over a wide area as required. An anchor section of the nozzle has an exit end connect connected to the entrance end of the telescoping section and an entrance end of the anchor section is connected to the exit end of the source. The anchor section has a passageway escape for gas that prevents sudden build up of pressure when the exit end of the nozzle is inadvertently obstructed. In one embodiment, the anchor section comprises an outer sleeve slidably mounted on an inner sleeve, both sleeves having apertures providing an adjustable passageway. A plug is positioned inside the inner sleeve and has a central bore for passing gas through the nozzle and a plurality of planet bores that provide relief from excessive pressure such as when the nozzle is inadvertently and suddenly stopped up.