Home defense is very important for lots of people. Those who live in the US have the advantage that they can quickly get firearms for the function, but in many other nations that is a not a choice, due to rigorous weapon laws.
Spear guns are generally viewed as a sports instrument rather than a weapon, and therefore they are legal even in some of the most limiting countries. Well, exactly what can kill a fish can probably also be effective against human trespassers – so spear weapons might be a feasible option for self defense.
This video is a (non sponsored) review about 2 different models, both about 50 cm long. Both are made by Cressi, among the leading manufacturers. One design is powered by rubber, the other one by compressed air.
How will these devices carry out against an archery mat and ballistic gelatin? What is the efficient range? Can they be "souped up" for more power?
This video has the responses.
A "The Slingshot Channel" production.