You are looking at my son's Nerf Stockade Shoulder Stock. It comes used, but fully working. It is complete with 10 Elite Darts.

From nerf.fandom.com:
The Stockade shoulder stock is a medium-length shoulder stock. It is quite thin and is able to store up to ten extra darts at a time, with five on each side of the stock.

Thanks for looking and if you have any questions please ask.

I am selling more Nerf items should you want to look at my other actions.

Postage may be quite high due to the size of these products, but I will be more than happy to combine on postage if you were to win multiple items.