Quality and proven dural nozzle with sealing ring. Body jets are made #8203;#8203;from high solid duralumin EN AW-6060 with an embedded rubber ring for maximum seal between the nozzle and cylinder head. Outlet nozzle is narrowed compared to conventional nozzles, creating a greater pressure at the flow of air into the barrel. The front of the nozzle is conical, which makes the best possible seal between the nozzle and hop up rubber band (just in a bad seal is the biggest loss of power) Length of nozzle is 24.6 mm.