Added a notice. Model gun parts

This is a barrel spring and sub-chamber made by Asahi Fire Arms.
These are spares.
I purchased and stored these as spares when I owned an M60 Super Custom.
They are unused, but due to long-term storage, the sub-chamber is dirty. However, I will polish and apply corrosion inhibition treatment before shipping.
Please refer to the list below for compatible models.
- M60 Super Custom
- M60E3 Long/Short Barrel
- First Bushmaster
*The Bushmaster Ultra Custom requires modification as the sub-chamber length is slightly different.
Please use them if you wish.

*Notes regarding replacement/installation.
When installing the listed product on an M60E3, the main chamber is attached to the barrel by screwing it in and is further secured with a cyanoacrylate resin solvent (Aron Alpha).
It can be removed by heating, but overheating may melt the O-ring inside the main chamber and the plastic collar that supports the barrel. Furthermore, due to this heating, the S-shaped feeding pipe is soldered, and the solder may loosen and become wobbly.
The main chamber itself is attached very securely, so if you try to remove it forcefully or improperly, it may become unusable in the worst-case scenario.