Pre-cocked FET installed Scorpion mod.M

This is a Tokyo Marui Scorpion Mod.M.
It has been modified with pre-cock and the inner barrel has been replaced.
Includes a dot sight. If you don't need the dot sight, the price will be reduced by 1000 yen.
It has been converted to a T-connector. A nearly new battery, converted to a T-connector and only used for test firing, is also included.
The grip interior has been modified to accommodate a FET and a T-connector battery, but it requires a knack, so please refer to images 5 and 6. Forcing it in may damage the FET or cause a disconnection.
For pre-cock, turning the location shown in image 3 counter-clockwise with a Phillips screwdriver as shown in image 4 will improve responsiveness. Turning it clockwise will result in a sluggish feel. Turning it too much may cause burst fire.
The tip of the magazine appears to be shaved, though this may have been the original condition. The magazine has a slight wobble when inserted, so you may want to attach a plastic sheet or something similar to the tip of the magazine.
The operation is fine.
The dot sight has been removed and placed inside the small box.