Don't think it was posted anywhere before, briefly searched the forum. (Saw it on another forum)
Seems to be fairly accurate. (Way more accurate than the pop can chrony)
Though they could of used something safer instead of using 2 stools. Fairly practical if you have a laptop to bring to your "shooting range" since shooting an airsoft in your living room or bedroom isn't exactly the greatest idea.
Wear your goggles/mask if you're going to try this