In some embodiments, an arrow comprises a shaft and a notch in an end of the arrow. The notch is arranged to receive a bowstring. A first finger recess and a second finger recess are located in proximity to the notch. The first finger recess and the second finger recess comprise opposed diverging surfaces.

In some embodiments, an arrow comprises a shaft and a notch in an end of the arrow. The notch is arranged to receive a bowstring. A first finger recess and a second finger recess are located in proximity to the notch. The first finger recess and the second finger recess comprise opposed diverging surfaces.

The harpoon tip of underwater weapon comprises a tip body with a threaded or other mounting system as well as one or more means for prey fixation. A striker is mounted on the tip body which has sharp peaks located at both ends of the striker, it is possible to flip the striker inside the body 180 degrees during hunting. The striker is made of a extremely strong hard alloy, substantially of tungsten carbide, titanium carbide or their combination, and the tip body is made of a heavy tungsten-based alloy.

The harpoon tip of underwater weapon comprises a tip body with a threaded or other mounting system as well as one or more means for prey fixation. A striker is mounted on the tip body which has sharp peaks located at both ends of the striker, it is possible to flip the striker inside the body 180 degrees during hunting. The striker is made of a extremely strong hard alloy, substantially of tungsten carbide, titanium carbide or their combination, and the tip body is made of a heavy tungsten-based alloy.

A speargun having a stock, a muzzle at a distal end thereof; and a pair of matching elastic tackles assemblies either side of the stock for tensioning a wishbone from the muzzle to a spear. Optionally, the speargun may have a second elastic tackle assembly disposed on the bottom of the stock. According to another approach, a speargun component kit may be provided to a user to attach to their own stock having a muzzle; a pair of tensionable pulley tackles having a line to attach a spear, to attach to the muzzle, and to attach to at least one pair of elastic bands at a second end; an adjustable anchor mount of the elastic bands to the stock, and a spear release mechanism.

A speargun having a stock, a muzzle at a distal end thereof; and a pair of matching elastic tackles assemblies either side of the stock for tensioning a wishbone from the muzzle to a spear. Optionally, the speargun may have a second elastic tackle assembly disposed on the bottom of the stock. According to another approach, a speargun component kit may be provided to a user to attach to their own stock having a muzzle; a pair of tensionable pulley tackles having a line to attach a spear, to attach to the muzzle, and to attach to at least one pair of elastic bands at a second end; an adjustable anchor mount of the elastic bands to the stock, and a spear release mechanism.

A speargun and speargun components are disclosed allowing for rapid reloading of the spear, and retaining the spear in the gun with an open track and retention mechanism. A spear retention mechanism is also disclosed, which may be integral with the speargun or interchangeable for different size spears. A phospholuminescent sighting track on one or both sides of the top of the speargun is also disclosed whereby the illuminated portion of the speargun provides a visual sight for a spear once inserted into the track. An interchangeable system of speargun retention mechanisms is also provided.

A speargun and speargun components are disclosed allowing for rapid reloading of the spear, and retaining the spear in the gun with an open track and retention mechanism. A spear retention mechanism is also disclosed, which may be integral with the speargun or interchangeable for different size spears. A phospholuminescent sighting track on one or both sides of the top of the speargun is also disclosed whereby the illuminated portion of the speargun provides a visual sight for a spear once inserted into the track. An interchangeable system of speargun retention mechanisms is also provided.

A speargun having a stock, a muzzle at a distal end thereof; and a pair of matching elastic tackles assemblies either side of the stock for tensioning a wishbone from the muzzle to a spear. Optionally, the speargun may have a second elastic tackle assembly disposed on the bottom of the stock. According to another approach, a speargun component kit may be provided to a user to attach to their own stock having a muzzle; a pair of tensionable pulley tackles having a line to attach a spear, to attach to the muzzle, and to attach to at least one pair of elastic bands at a second end; an adjustable anchor mount of the elastic bands to the stock, and a spear release mechanism.

A speargun having a stock, a muzzle at a distal end thereof; and a pair of matching elastic tackles assemblies either side of the stock for tensioning a wishbone from the muzzle to a spear. Optionally, the speargun may have a second elastic tackle assembly disposed on the bottom of the stock. According to another approach, a speargun component kit may be provided to a user to attach to their own stock having a muzzle; a pair of tensionable pulley tackles having a line to attach a spear, to attach to the muzzle, and to attach to at least one pair of elastic bands at a second end; an adjustable anchor mount of the elastic bands to the stock, and a spear release mechanism.