Specna SA-B01 decect

For sale: specna arms SA-B01. Does not work.

I am selling my specna arms M4. This is my first replica that I bought a few years ago.
I've had problems with it since I got this replica, but in the end I only played 1 skirm with it.
The replica has received a new SHS hop-up chamber, there is a rubber, but the bucking is missing.
Furthermore, the front sling point has been removed.
The zinc metal screws in the pistol grip are no longer in the best condition due to frequent disassembly.
If you are looking for a replica to connect or just a donor replica for parts, then this might be something for you.
I'll try to drum up the original box or else I'll put it in a replacement box from an airsoft replica.