I can't really think of a reason why the piston returns to the original position!! any ideas?? I made a transparent QEV coaxial cannon out of the preform of a bottle. This was inspired by a Nighthawkinlight's project, although I added a transparent barrel and had to make everything work with a wooden piston and o-ring seal. The breech seal is just a piece of rubber from the inner tube of a bike tire. Thanks for watching!

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Ley No. 22 de Las 48 Leyes del Poder de Robert Greene. #shorts

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Having a blast in Ocotillo Wells in the Can-Am. What Can-Am is your favorite? #canam #fourwheeldrive

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