a pistol fired under water will only have ~15 feet of range, and not much velocity.
Me doubts any scuba diver is going to be shooting any sharks with a pistol.
there is an HK underwater pistol on
www.HKpro.com but i think thats for pinking mammals.
if you bangstick a shark, doesn't that attract other sharks?
http://www.beco-products.com/about_beco.htm
i'll take mine in 50bmg!
http://www.beco-products.com/images/...t/MVC-230X.JPG
http://discountdivers.com/fx/gary.bandstick.html
dZ