Here is how a lightning link works. There are less than 500 registered transferrable lightning links in the US. They work for virtually all calibers that are available …
WARNING: BUILD AT YOUR OWN RISK. GoPro could sustain water damage.
This is how I built a GoPro underwater dome for less than $35!
BUILD MATERIALS:
Acrylic Dome – $7.40 – https://bit.ly/1XkrQoZ
Lexan Polycarbonate Sheet – $4.24 – https://low.es/1TzC5Ab
6″ Rubber Washer – $1.99 – https://low.es/24MxRQI
Flat Black Spray Paint – $0.99 – https://low.es/27cybqX
#6 3/8″ Stainless Steel Washers – $1.98 – https://low.es/1WoJLvD
#6 Nylon Insert Locking Nuts – $1.98 – https://low.es/21UZqlV
#6-32 x 3/8″ Machine Screw – $1.98 – https://low.es/1VSDpEt
Silicon Sealant – $5.24 – https://low.es/1rFuj1a
GoPro Dive Housing – eBay – $7.99 – https://ebay.to/24JDuvK
These are the link to which I got all my items. Prices subject to change.
Music:
Happy Bee Surf by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300015
Artist: https://incompetech.com/