To ensure that your speargun lasts a lifetime, it is important to take care of it properly. Here are some tips for maintaining your speargun

1. Rinse your speargun with fresh water after every dive to remove salt and other debris. This will help prevent corrosion and ensure that the speargun continues to function properly.

2. Store your speargun in a dry and cool place, away from direct sunlight or extreme temperatures. This will help prevent warping or other damage to the speargun.

3. Apply a light coat of silicone or other lubricant to the speargun's metal parts to help prevent rust and corrosion. Be sure to wipe off any excess oil before using the speargun.

4. Inspect your speargun regularly for any signs of damage or wear. This includes checking the speargun's bands, shaft, trigger mechanism, and other parts.

5. When transporting your speargun, make sure it is properly secured and protected. Avoid throwing or dropping the speargun, as this can cause damage to the speargun's finish and internal components.