Knives Fin

how does a ballistic knife blade stay straight after it’s been expelled from the handle?

how do they do it without the use of fins or rotational force?

Physics. Its a short range weapon meaning you have a lot of wiggle room and also the balance of the blade comes into play as well.

Doesn’t matter, ballistic knives are totally illegal for civilian use or ownership. Even for collectors.

KaBar Fin Fixed Blade Clip Point knife review