Portal Gun

[Limited]

I wouldn't think it messes with default teleports, since you can go into sparkedit and create all the teleport entrances and exits you want. What he probably did is mod the effect of the projectile hitting stuff so it first spawns a teleport entrance then a teleport exit, or perhaps there's a secondary trigger.

tbh i think you'll find i know more on the subject than you do.

You can't just "spawn" things using memory hacking. Locke found the teleporter coordinates ages ago, and had fun making me tele out the map

Thats why I think it moves them. You can't move some thing you dont have.