For sale is a Sword (as well as a mount with 5mm peg) for Transformers Soundwave (Studios Series 83 Bumblebee Movie). Sword and mount fit other action figures too.
If you need other upgrade kits for Soundwave, please check these listings:
1. Leg Gap Fillers:
https://www.ebay.com/itm/154783421187
2.Tank Adapter Upgrade Kit:
https://www.ebay.com/itm/154782505579
3. Cannon/Missile:
https://www.ebay.com/itm/154796482576
4. Sword + Mount Upgrade Kit:
https://www.ebay.com/itm/154796490333
5. Missile effects for Ravage:
https://www.ebay.com/itm/154827192512