FPS Air Nozzle 21,20mm Made Of Delrin With Inner O-Ring For M4/M16

FPS Softair

The FPS M4/M16 Air Nozzle is a replacement nozzle for all M4/M16 type guns.
Its DELRIN CNC construction and internal o-ring makes it a great upgrade from a factory air nozzle.
Be sure to use pure silicone oil when lubricating the nozzle stem on your cylinder head before installing this nozzle.
Increase your power and efficiency with this better sealing and more durable nozzle.
This product is designed and manufactured entirely in Italy, by technicians who have years of experience in the repair and modification of airsoft replicas.
100% Marui compatible.
Length: 21.2 mm
Inner hole diameter: 5.4 mm

I personal use these because of the low friction coefficient in metal and plastic hop up units.