[Mastador1]

The other one was coil gun: a tube surrounded by a coil and powered by a standard AA battery.

Sounds like the kid made a rail gun.

Back around 1968 I had a electrical shop teacher ( when was the last time you heard of that) that taught us to build coil guns and we shot nails across the room.

[verga]

Back around 1968 I had a electrical shop teacher ( when was the last time you heard of that) that taught us to build coil guns and we shot nails across the room.

I must have had a relative of his, In 1976 we did the exact same thing, with the Principal watching. He laughed the hardest of all of us.

[Therapsid]

https://video.search.yahoo.com/video/play;_ylt=A2KLqIJgD0dTeicAmgf7w8QF;_ylu=X3oDMTB2cXRjM2loBHNlYwNzcgRzbGsDdmlkBHZ0aWQDVjE1MgRncG9zAzE-?p=video+russian+gym+kids+assemble+ak&vid=fd8520581802faf979a54e1a135d4059&l=3%3A52&turl=http%3A%2F%2Fts1.mm.bing.net%2Fth%3Fid%3DVN.607989536102418484%26pid%3D15.1&rurl=http%3A%2F%2Fvideosift.com%2Fvideo%2FRussian-Students-AK-74-Gun-Assembly-Disassembly&tit=Russian+Students+AK-74+Gun+Assembly%2FDisassembly.&c=0&sigr=12a1f2vnr&sigt=11go1gpid&age=0&&tt=b