Different use for a barrel

Something I came up with this morning. I created a cylinder with a couple of mid textures and blocked them from the player. I then stuck a barrel inside which cannot be seen. So you can shoot this cylinder/pillar thing and see an explosion. It makes it look as though you're destroying machinery.

Cool. In a recent map of mine, pressing use on a certain piece of technology would crush barrels offmap and teleport them nearby, simulating an explosion. It's silly, but I like this sort of thing.

How do you get the barrel to move into the teleporter?

By setting up a chain. This was the setup I used (only one non-teleporting barrel is necessary):

That's damn clever. Can I see the map this was used on?

https://www.doomworld.com/vb/post/1656351

UV is hard, HMP removes many PEs/AVs, HNTR is for leisure.

I'll send a PM with a spoiler for the secret that contains the effect.