Aluminum nozzle with a double O-ring for M4/V2 series AEG's. Unlike many stock nozzle's this one comes with a double O-ring, providing a very tight seal to the cylinder head. I only recommend these if you are having problems with your currently nozzle / cylinder seal. If though it comes up too tight you can always remove one of the O-rings.
Length is 21.4mm Please note colour may vary.