#41159
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matt76
Survivalist
member8

If you notice the backs of the arrows in the video they have had the knocks removed and the solid ends cut off. This gives the arrow a chamber to harness the energy provided by the blast of air. If you used a solid arrow a piston of some sort would have to be used to transfer the energy to the arrow. Now if they could just come up with a repeater version of the breech loading model that would be totally awesome. :)