Mine is a second-hand trench coat with the sleeves cut off and the holes hemmed.
The Decker's jacket is a modification of
Butterick pattern B5232 (she made her whole outfit from scratch except the corset).
I hand painted the Shadowrun insignia on the backs.
In case anyone is curious:
The assault rifle is a Nerf Stampede ECS-50
The Fairlight Excalibur is an old iMac keyboard
The cyberarm is literally painted on
I wish I had thought to take pictures throughout the process. These were fun costumes.