Over the decades various pneumatic speargun models have been produced by different manufacturers, some are long production models and are still with us, but others have disappeared and so has the supply of spare parts for them, particularly the all-important spears. Happily some third party manufacturers are still keeping these spear tails going and you can see them here. I had forgotten about them until I just did a search.
Gun Adapter End - Adapt A Shaft
www.aplusmarine.com
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