How to rig/set up/assemble Seac Sting Speargun

Here is a tutorial video on how I set up the Seac Sting speargun.
Here's the link to purchase it pre-rigged just like you see it in the video.
rover.ebay.com/rover/1/711-53...
Here are the links to do it yourself.
300 lb monofilament
rover.ebay.com/rover/1/711-53...
billfisher 1.9b copper double barrel crimps
rover.ebay.com/rover/1/711-53... sting
Here's a link to a good set of crimpers a little bit pricey but I think they're worth it not as expensive as the $150 ones on the video
rover.ebay.com/rover/1/711-53...