This nozzle is CNC machined from aluminum alloy EN AW 6012.
Inside this nozzle is one sealing O-ring which stop loss of air during the shot and helps to increase FPS.
Airsoft-Parts 21.0 Nozzle
This nozzle must be used with an Airsoft-Parts Bore-Up cylinder, cylinder head and piston head.
We recommend lightly lubricating the o-ring with Super Lube liquid silicone oil.