The UAC Aluminium Loading Nozzle is designed with the use of aluminium blowback housing. Original blowback housing may need modification while installing. It is recommended to use anti-oil o-ring of size 9*2mm. Please fully lubricant the nozzle (both internal & external) and the o-ring before use.
After installed the UAC Aluminium Loading Nozzle, try to pull the nozzle forward; it can smoothly back to its original place if installed correctly. If it can't go back smoothly, please check the tube of the blowback housing and size of the o-ring. The o-ring may be too big to fit into the nozzle.
Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different.
