Not much use
Never had much use for a weapon of that kind, seeing as I have my weapons on me all the time. And it's much more refreshing to fight with teeth and claws, well just teeth in my case.
And those toys would be no good against one of us anyways. Bullets won't stop a vampire, they hurt like hell if you get shot but nothing more. Simply a nuisance.
First chance, I'm getting me a bigger one though. With a higher caliber.
They won't stop anyone of my kind, but they'll at least make pretty holes in my enemies.