https://www.youtube.com/watch?v=Z9pt0LW8YAw
The rifle that fires itself!
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https://www.youtube.com/watch?v=Z9pt0LW8YAw
https://www.youtube.com/watch?v=PJLV_Y6PLjg
https://www.youtube.com/watch?v=DCoqg4Ef8vc
https://www.youtube.com/watch?v=Of4-P1Vx3FY
https://www.youtube.com/watch?v=Bl7VxDxM5i4
https://www.youtube.com/watch?v=gbIHtO4_TNU