>>1184917He makes them himself. Here's a how to video series he made a while ago:
https://youtu.be/6eWDgNrLYpsPretty informative and entertaining channel overall.
He also makes and sells bows, bow staves, arrows, arrow heads, knives, etc. on his website (
primitivepathways.com).
He was also the vest survivalist on "Naked and Afraid" here's his Discovery Wiki page:
http://www.discovery.com/tv-shows/naked-and-afraid/bios/billy-berger/