Airsoft 40mm to shotgun shell adapter

Real quick vid, forgot to mention the other reason behind this was for CQB when you don't wanna blast someone with 100 bbs lol. I mentioned 50$ for a 5 pack, those all seem to be out of stock, airsoftpart.ca has 5 packs for 80$ and 89$ depending on brand. Yes you can 3D print these but idk didn't feel like it.