M4 S-System M14 M16 Electric Airsoft Gun

M4 S-System
I believe I purchased it for around ¥45,000.

I intended to use it someday, but I was transferred and got into other hobbies, so it's almost unused.
I've decided to sell it now rather than buy a battery just for inspection when I'm not using it.
There may be some overlooked details,
but there are some scuff marks under the barrel.

As I am an amateur, I have not performed any adjustments, so please inspect and maintain it yourself.

Used once for airsoft.
Fired about 10 rounds every six months for operational checks.
Operational check a few months ago.
The battery currently charging is missing, so I cannot confirm operation, but it has worked without any issues so far, so I believe it's fine, but I cannot guarantee it.

Storage: Indoors, rust prevention with silicone spray without disassembly (some age-related deterioration).

Purchased from: First
Customization: Fully stock (memory is vague as First did not keep customization records)
Not disassembled after new purchase.

I believe it comes with a high-capacity magazine (unused for airsoft), but I don't remember for sure.

The last image is a size sample.
If you are interested in anything, I will list it (set of 1 gun and all parts).
*EBR sold out.

It is stored at my parents' house, so shipping and other detailed confirmations will take time.

As I am an amateur, I will answer to the best of my ability,
but I cannot provide detailed information.
The First membership card contains personal information, so it will be excluded.

*Please be 18 years or older to purchase.