This is an aluminum nozzle with O-ring for M4 series rifles. These are the same as SHS nozzles. The O-ring stops air from leaking between the cylinder head and nozzle, all stock nozzle don't have this. This can increase FPS quite a lot depending on how much air is leaking. Since this doesn't put any more stress on the motor this won't affect your rate of fire like a stiffer spring or spring spacer.
- Aluminum construction
- O-ring increases FPS with no loss of ROF
- Total length 21.50 mm ( .845 in)
This product was added to our catalog on Sunday 20 December, 2015.