Installing a Reel on a Speargun 2 (Pipe Gun)

I had an opportunity to purchase this inexpensive Apnea Universal reel for $26 new. Probably, I did not need a reel on my short 60cm Mako speargun, but I did not want to lose my gun, so I decided to install this inexpensive reel. The reel supposed to be a universal reel that should work with any pipe gun, but the shape of the reel bracket only fits the Apnea brand speargun, so I had to modify the adapter. The reel is not the most durable and highest performance reel out there, but for $26, I cannot complain. I also used this cheap 1.7mm dyneema line costing less than $10 for 80ft of line.