The only silent gun is a laser gun. Something tha doesnt fire a projetile. Something with gunpowder or moving metal parts always makes noise.
No, not so! Silenced handguns can’t be heard from ten feet away, just like James Bond in `Doctor No’: “That’s a Smith & Wesson, and you’ve had your six. (pew! pew!)”
;^)
Laser weapons make a sharp crack as the beam goes through the air. There is a loud noise from the target as well as the gases are expelled from the impact site.